Clone before passing to java + new clone upstream
[ldk-java] / src / main / jni / bindings.c
index d80311a7213edb4db36584366a418a709bbb4fa9..0fc1da033e817678ac6f7321fc6b3589f64c4688 100644 (file)
 #include "org_ldk_impl_bindings.h"
 #include <rust_types.h>
 #include <lightning.h>
-#include <assert.h>
 #include <string.h>
 #include <stdatomic.h>
+#include <assert.h>
+// Always run a, then assert it is true:
+#define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
+// Assert a is true or do nothing
+#define CHECK(a) DO_ASSERT(a)
+
+// Running a leak check across all the allocations and frees of the JDK is a mess,
+// so instead we implement our own naive leak checker here, relying on the -wrap
+// linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
+// and free'd in Rust or C across the generated bindings shared library.
+#include <threads.h>
+#include <execinfo.h>
+#include <unistd.h>
+static mtx_t allocation_mtx;
+
+void __attribute__((constructor)) init_mtx() {
+       DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);
+}
+
+#define BT_MAX 128
+typedef struct allocation {
+       struct allocation* next;
+       void* ptr;
+       const char* struct_name;
+       void* bt[BT_MAX];
+       int bt_len;
+} allocation;
+static allocation* allocation_ll = NULL;
+
+void* __real_malloc(size_t len);
+void* __real_calloc(size_t nmemb, size_t len);
+static void new_allocation(void* res, const char* struct_name) {
+       allocation* new_alloc = __real_malloc(sizeof(allocation));
+       new_alloc->ptr = res;
+       new_alloc->struct_name = struct_name;
+       new_alloc->bt_len = backtrace(new_alloc->bt, BT_MAX);
+       DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
+       new_alloc->next = allocation_ll;
+       allocation_ll = new_alloc;
+       DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
+}
+static void* MALLOC(size_t len, const char* struct_name) {
+       void* res = __real_malloc(len);
+       new_allocation(res, struct_name);
+       return res;
+}
+void __real_free(void* ptr);
+static void alloc_freed(void* ptr) {
+       allocation* p = NULL;
+       DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
+       allocation* it = allocation_ll;
+       while (it->ptr != ptr) {
+               p = it; it = it->next;
+               if (it == NULL) {
+                       fprintf(stderr, "Tried to free unknown pointer %p at:\n", ptr);
+                       void* bt[BT_MAX];
+                       int bt_len = backtrace(bt, BT_MAX);
+                       backtrace_symbols_fd(bt, bt_len, STDERR_FILENO);
+                       fprintf(stderr, "\n\n");
+                       DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
+                       return; // addrsan should catch malloc-unknown and print more info than we have
+               }
+       }
+       if (p) { p->next = it->next; } else { allocation_ll = it->next; }
+       DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
+       DO_ASSERT(it->ptr == ptr);
+       __real_free(it);
+}
+static void FREE(void* ptr) {
+       if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
+       alloc_freed(ptr);
+       __real_free(ptr);
+}
 
-jmethodID ordinal_meth = NULL;
-JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class) {
-       ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
-       assert(ordinal_meth != NULL);
+void* __wrap_malloc(size_t len) {
+       void* res = __real_malloc(len);
+       new_allocation(res, "malloc call");
+       return res;
+}
+void* __wrap_calloc(size_t nmemb, size_t len) {
+       void* res = __real_calloc(nmemb, len);
+       new_allocation(res, "calloc call");
+       return res;
+}
+void __wrap_free(void* ptr) {
+       alloc_freed(ptr);
+       __real_free(ptr);
+}
+
+void* __real_realloc(void* ptr, size_t newlen);
+void* __wrap_realloc(void* ptr, size_t len) {
+       alloc_freed(ptr);
+       void* res = __real_realloc(ptr, len);
+       new_allocation(res, "realloc call");
+       return res;
+}
+void __wrap_reallocarray(void* ptr, size_t new_sz) {
+       // Rust doesn't seem to use reallocarray currently
+       assert(false);
+}
+
+void __attribute__((destructor)) check_leaks() {
+       for (allocation* a = allocation_ll; a != NULL; a = a->next) {
+               fprintf(stderr, "%s %p remains:\n", a->struct_name, a->ptr);
+               backtrace_symbols_fd(a->bt, a->bt_len, STDERR_FILENO);
+               fprintf(stderr, "\n\n");
+       }
+       DO_ASSERT(allocation_ll == NULL);
+}
+static jclass arr_of_B_clz = NULL;
+JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass _b) {
+       arr_of_B_clz = (*env)->FindClass(env, "[B");
+       CHECK(arr_of_B_clz != NULL);
+       arr_of_B_clz = (*env)->NewGlobalRef(env, arr_of_B_clz);
 }
 
-#define MALLOC(a, _) malloc(a)
-#define FREE free
+static jmethodID ordinal_meth = NULL;
+static jmethodID slicedef_meth = NULL;
+static jclass slicedef_cls = NULL;
+JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) {
+       ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
+       CHECK(ordinal_meth != NULL);
+       slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
+       CHECK(slicedef_meth != NULL);
+       slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
+       CHECK(slicedef_cls != NULL);
+}
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKSecretKey_1new(JNIEnv * _env, jclass _b) {
-       LDKSecretKey* key = (LDKSecretKey*)MALLOC(sizeof(LDKSecretKey), "LDKSecretKey");
-       return (long)key;
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) {
+       return *((bool*)ptr);
 }
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) {
+       return *((long*)ptr);
+}
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) {
+       FREE((void*)ptr);
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * _env, jclass _b, jlong ptr, jlong len) {
+       jbyteArray ret_arr = (*_env)->NewByteArray(_env, len);
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, len, (unsigned char*)ptr);
+       return ret_arr;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * _env, jclass _b, jlong slice_ptr) {
+       LDKu8slice *slice = (LDKu8slice*)slice_ptr;
+       jbyteArray ret_arr = (*_env)->NewByteArray(_env, slice->datalen);
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, slice->datalen, slice->data);
+       return ret_arr;
+}
+JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_bytes_1to_1u8_1vec (JNIEnv * _env, jclass _b, jbyteArray bytes) {
+       LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8");
+       vec->datalen = (*_env)->GetArrayLength(_env, bytes);
+       vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
+       (*_env)->GetByteArrayRegion (_env, bytes, 0, vec->datalen, vec->data);
+       return (long)vec;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
+       LDKTransaction *txdata = (LDKTransaction*)ptr;
+       LDKu8slice slice;
+       slice.data = txdata->data;
+       slice.datalen = txdata->datalen;
+       return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice);
+}
+JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
+       LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       txdata->datalen = (*env)->GetArrayLength(env, bytes);
+       txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
+       txdata->data_is_owned = false;
+       (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
+       return (long)txdata;
+}
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
+       LDKTransaction *tx = (LDKTransaction*)ptr;
+       tx->data_is_owned = true;
+       Transaction_free(*tx);
+       FREE((void*)ptr);
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) {
+       // Check offsets of a few Vec types are all consistent as we're meant to be generic across types
+       _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically");
+       _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically");
+       _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically");
+       _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically");
+       LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr;
+       return (long)vec->datalen;
+}
+JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * _env, jclass _b) {
+       // Check sizes of a few Vec types are all consistent as we're meant to be generic across types
+       _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically");
+       _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically");
+       _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically");
+       _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically");
+       LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
+       vec->data = NULL;
+       vec->datalen = 0;
+       return (long)vec;
+}
+
+// We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
+_Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
+_Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
+_Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
+
 static inline LDKAccessError LDKAccessError_from_java(JNIEnv *env, jclass val) {
        switch ((*env)->CallIntMethod(env, val, ordinal_meth)) {
                case 0: return LDKAccessError_UnknownChain;
                case 1: return LDKAccessError_UnknownTx;
        }
-       assert(false);
+       abort();
+}
+static jclass LDKAccessError_class = NULL;
+static jfieldID LDKAccessError_LDKAccessError_UnknownChain = NULL;
+static jfieldID LDKAccessError_LDKAccessError_UnknownTx = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_enums_LDKAccessError_init (JNIEnv * env, jclass clz) {
+       LDKAccessError_class = (*env)->NewGlobalRef(env, clz);
+       CHECK(LDKAccessError_class != NULL);
+       LDKAccessError_LDKAccessError_UnknownChain = (*env)->GetStaticFieldID(env, LDKAccessError_class, "LDKAccessError_UnknownChain", "Lorg/ldk/enums/LDKAccessError;");
+       CHECK(LDKAccessError_LDKAccessError_UnknownChain != NULL);
+       LDKAccessError_LDKAccessError_UnknownTx = (*env)->GetStaticFieldID(env, LDKAccessError_class, "LDKAccessError_UnknownTx", "Lorg/ldk/enums/LDKAccessError;");
+       CHECK(LDKAccessError_LDKAccessError_UnknownTx != NULL);
 }
 static inline jclass LDKAccessError_to_java(JNIEnv *env, LDKAccessError val) {
-       // TODO: This is pretty inefficient, we really need to cache the field IDs and class
-       jclass enum_class = (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKAccessError;");
-       assert(enum_class != NULL);
        switch (val) {
-               case LDKAccessError_UnknownChain: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKAccessError_UnknownChain", "Lorg/ldk/impl/bindings$LDKAccessError;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKAccessError_UnknownTx: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKAccessError_UnknownTx", "Lorg/ldk/impl/bindings$LDKAccessError;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               default: assert(false);
+               case LDKAccessError_UnknownChain:
+                       return (*env)->GetStaticObjectField(env, LDKAccessError_class, LDKAccessError_LDKAccessError_UnknownChain);
+               case LDKAccessError_UnknownTx:
+                       return (*env)->GetStaticObjectField(env, LDKAccessError_class, LDKAccessError_LDKAccessError_UnknownTx);
+               default: abort();
        }
 }
 
@@ -49,24 +238,26 @@ static inline LDKChannelMonitorUpdateErr LDKChannelMonitorUpdateErr_from_java(JN
                case 0: return LDKChannelMonitorUpdateErr_TemporaryFailure;
                case 1: return LDKChannelMonitorUpdateErr_PermanentFailure;
        }
-       assert(false);
+       abort();
+}
+static jclass LDKChannelMonitorUpdateErr_class = NULL;
+static jfieldID LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_TemporaryFailure = NULL;
+static jfieldID LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_PermanentFailure = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_enums_LDKChannelMonitorUpdateErr_init (JNIEnv * env, jclass clz) {
+       LDKChannelMonitorUpdateErr_class = (*env)->NewGlobalRef(env, clz);
+       CHECK(LDKChannelMonitorUpdateErr_class != NULL);
+       LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_TemporaryFailure = (*env)->GetStaticFieldID(env, LDKChannelMonitorUpdateErr_class, "LDKChannelMonitorUpdateErr_TemporaryFailure", "Lorg/ldk/enums/LDKChannelMonitorUpdateErr;");
+       CHECK(LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_TemporaryFailure != NULL);
+       LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_PermanentFailure = (*env)->GetStaticFieldID(env, LDKChannelMonitorUpdateErr_class, "LDKChannelMonitorUpdateErr_PermanentFailure", "Lorg/ldk/enums/LDKChannelMonitorUpdateErr;");
+       CHECK(LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_PermanentFailure != NULL);
 }
 static inline jclass LDKChannelMonitorUpdateErr_to_java(JNIEnv *env, LDKChannelMonitorUpdateErr val) {
-       // TODO: This is pretty inefficient, we really need to cache the field IDs and class
-       jclass enum_class = (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKChannelMonitorUpdateErr;");
-       assert(enum_class != NULL);
        switch (val) {
-               case LDKChannelMonitorUpdateErr_TemporaryFailure: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKChannelMonitorUpdateErr_TemporaryFailure", "Lorg/ldk/impl/bindings$LDKChannelMonitorUpdateErr;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKChannelMonitorUpdateErr_PermanentFailure: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKChannelMonitorUpdateErr_PermanentFailure", "Lorg/ldk/impl/bindings$LDKChannelMonitorUpdateErr;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               default: assert(false);
+               case LDKChannelMonitorUpdateErr_TemporaryFailure:
+                       return (*env)->GetStaticObjectField(env, LDKChannelMonitorUpdateErr_class, LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_TemporaryFailure);
+               case LDKChannelMonitorUpdateErr_PermanentFailure:
+                       return (*env)->GetStaticObjectField(env, LDKChannelMonitorUpdateErr_class, LDKChannelMonitorUpdateErr_LDKChannelMonitorUpdateErr_PermanentFailure);
+               default: abort();
        }
 }
 
@@ -76,29 +267,31 @@ static inline LDKConfirmationTarget LDKConfirmationTarget_from_java(JNIEnv *env,
                case 1: return LDKConfirmationTarget_Normal;
                case 2: return LDKConfirmationTarget_HighPriority;
        }
-       assert(false);
+       abort();
+}
+static jclass LDKConfirmationTarget_class = NULL;
+static jfieldID LDKConfirmationTarget_LDKConfirmationTarget_Background = NULL;
+static jfieldID LDKConfirmationTarget_LDKConfirmationTarget_Normal = NULL;
+static jfieldID LDKConfirmationTarget_LDKConfirmationTarget_HighPriority = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_enums_LDKConfirmationTarget_init (JNIEnv * env, jclass clz) {
+       LDKConfirmationTarget_class = (*env)->NewGlobalRef(env, clz);
+       CHECK(LDKConfirmationTarget_class != NULL);
+       LDKConfirmationTarget_LDKConfirmationTarget_Background = (*env)->GetStaticFieldID(env, LDKConfirmationTarget_class, "LDKConfirmationTarget_Background", "Lorg/ldk/enums/LDKConfirmationTarget;");
+       CHECK(LDKConfirmationTarget_LDKConfirmationTarget_Background != NULL);
+       LDKConfirmationTarget_LDKConfirmationTarget_Normal = (*env)->GetStaticFieldID(env, LDKConfirmationTarget_class, "LDKConfirmationTarget_Normal", "Lorg/ldk/enums/LDKConfirmationTarget;");
+       CHECK(LDKConfirmationTarget_LDKConfirmationTarget_Normal != NULL);
+       LDKConfirmationTarget_LDKConfirmationTarget_HighPriority = (*env)->GetStaticFieldID(env, LDKConfirmationTarget_class, "LDKConfirmationTarget_HighPriority", "Lorg/ldk/enums/LDKConfirmationTarget;");
+       CHECK(LDKConfirmationTarget_LDKConfirmationTarget_HighPriority != NULL);
 }
 static inline jclass LDKConfirmationTarget_to_java(JNIEnv *env, LDKConfirmationTarget val) {
-       // TODO: This is pretty inefficient, we really need to cache the field IDs and class
-       jclass enum_class = (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKConfirmationTarget;");
-       assert(enum_class != NULL);
        switch (val) {
-               case LDKConfirmationTarget_Background: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKConfirmationTarget_Background", "Lorg/ldk/impl/bindings$LDKConfirmationTarget;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKConfirmationTarget_Normal: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKConfirmationTarget_Normal", "Lorg/ldk/impl/bindings$LDKConfirmationTarget;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKConfirmationTarget_HighPriority: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKConfirmationTarget_HighPriority", "Lorg/ldk/impl/bindings$LDKConfirmationTarget;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               default: assert(false);
+               case LDKConfirmationTarget_Background:
+                       return (*env)->GetStaticObjectField(env, LDKConfirmationTarget_class, LDKConfirmationTarget_LDKConfirmationTarget_Background);
+               case LDKConfirmationTarget_Normal:
+                       return (*env)->GetStaticObjectField(env, LDKConfirmationTarget_class, LDKConfirmationTarget_LDKConfirmationTarget_Normal);
+               case LDKConfirmationTarget_HighPriority:
+                       return (*env)->GetStaticObjectField(env, LDKConfirmationTarget_class, LDKConfirmationTarget_LDKConfirmationTarget_HighPriority);
+               default: abort();
        }
 }
 
@@ -111,44 +304,46 @@ static inline LDKLevel LDKLevel_from_java(JNIEnv *env, jclass val) {
                case 4: return LDKLevel_Debug;
                case 5: return LDKLevel_Trace;
        }
-       assert(false);
+       abort();
+}
+static jclass LDKLevel_class = NULL;
+static jfieldID LDKLevel_LDKLevel_Off = NULL;
+static jfieldID LDKLevel_LDKLevel_Error = NULL;
+static jfieldID LDKLevel_LDKLevel_Warn = NULL;
+static jfieldID LDKLevel_LDKLevel_Info = NULL;
+static jfieldID LDKLevel_LDKLevel_Debug = NULL;
+static jfieldID LDKLevel_LDKLevel_Trace = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_enums_LDKLevel_init (JNIEnv * env, jclass clz) {
+       LDKLevel_class = (*env)->NewGlobalRef(env, clz);
+       CHECK(LDKLevel_class != NULL);
+       LDKLevel_LDKLevel_Off = (*env)->GetStaticFieldID(env, LDKLevel_class, "LDKLevel_Off", "Lorg/ldk/enums/LDKLevel;");
+       CHECK(LDKLevel_LDKLevel_Off != NULL);
+       LDKLevel_LDKLevel_Error = (*env)->GetStaticFieldID(env, LDKLevel_class, "LDKLevel_Error", "Lorg/ldk/enums/LDKLevel;");
+       CHECK(LDKLevel_LDKLevel_Error != NULL);
+       LDKLevel_LDKLevel_Warn = (*env)->GetStaticFieldID(env, LDKLevel_class, "LDKLevel_Warn", "Lorg/ldk/enums/LDKLevel;");
+       CHECK(LDKLevel_LDKLevel_Warn != NULL);
+       LDKLevel_LDKLevel_Info = (*env)->GetStaticFieldID(env, LDKLevel_class, "LDKLevel_Info", "Lorg/ldk/enums/LDKLevel;");
+       CHECK(LDKLevel_LDKLevel_Info != NULL);
+       LDKLevel_LDKLevel_Debug = (*env)->GetStaticFieldID(env, LDKLevel_class, "LDKLevel_Debug", "Lorg/ldk/enums/LDKLevel;");
+       CHECK(LDKLevel_LDKLevel_Debug != NULL);
+       LDKLevel_LDKLevel_Trace = (*env)->GetStaticFieldID(env, LDKLevel_class, "LDKLevel_Trace", "Lorg/ldk/enums/LDKLevel;");
+       CHECK(LDKLevel_LDKLevel_Trace != NULL);
 }
 static inline jclass LDKLevel_to_java(JNIEnv *env, LDKLevel val) {
-       // TODO: This is pretty inefficient, we really need to cache the field IDs and class
-       jclass enum_class = (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKLevel;");
-       assert(enum_class != NULL);
        switch (val) {
-               case LDKLevel_Off: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKLevel_Off", "Lorg/ldk/impl/bindings$LDKLevel;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKLevel_Error: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKLevel_Error", "Lorg/ldk/impl/bindings$LDKLevel;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKLevel_Warn: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKLevel_Warn", "Lorg/ldk/impl/bindings$LDKLevel;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKLevel_Info: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKLevel_Info", "Lorg/ldk/impl/bindings$LDKLevel;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKLevel_Debug: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKLevel_Debug", "Lorg/ldk/impl/bindings$LDKLevel;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKLevel_Trace: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKLevel_Trace", "Lorg/ldk/impl/bindings$LDKLevel;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               default: assert(false);
+               case LDKLevel_Off:
+                       return (*env)->GetStaticObjectField(env, LDKLevel_class, LDKLevel_LDKLevel_Off);
+               case LDKLevel_Error:
+                       return (*env)->GetStaticObjectField(env, LDKLevel_class, LDKLevel_LDKLevel_Error);
+               case LDKLevel_Warn:
+                       return (*env)->GetStaticObjectField(env, LDKLevel_class, LDKLevel_LDKLevel_Warn);
+               case LDKLevel_Info:
+                       return (*env)->GetStaticObjectField(env, LDKLevel_class, LDKLevel_LDKLevel_Info);
+               case LDKLevel_Debug:
+                       return (*env)->GetStaticObjectField(env, LDKLevel_class, LDKLevel_LDKLevel_Debug);
+               case LDKLevel_Trace:
+                       return (*env)->GetStaticObjectField(env, LDKLevel_class, LDKLevel_LDKLevel_Trace);
+               default: abort();
        }
 }
 
@@ -158,29 +353,31 @@ static inline LDKNetwork LDKNetwork_from_java(JNIEnv *env, jclass val) {
                case 1: return LDKNetwork_Testnet;
                case 2: return LDKNetwork_Regtest;
        }
-       assert(false);
+       abort();
+}
+static jclass LDKNetwork_class = NULL;
+static jfieldID LDKNetwork_LDKNetwork_Bitcoin = NULL;
+static jfieldID LDKNetwork_LDKNetwork_Testnet = NULL;
+static jfieldID LDKNetwork_LDKNetwork_Regtest = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_enums_LDKNetwork_init (JNIEnv * env, jclass clz) {
+       LDKNetwork_class = (*env)->NewGlobalRef(env, clz);
+       CHECK(LDKNetwork_class != NULL);
+       LDKNetwork_LDKNetwork_Bitcoin = (*env)->GetStaticFieldID(env, LDKNetwork_class, "LDKNetwork_Bitcoin", "Lorg/ldk/enums/LDKNetwork;");
+       CHECK(LDKNetwork_LDKNetwork_Bitcoin != NULL);
+       LDKNetwork_LDKNetwork_Testnet = (*env)->GetStaticFieldID(env, LDKNetwork_class, "LDKNetwork_Testnet", "Lorg/ldk/enums/LDKNetwork;");
+       CHECK(LDKNetwork_LDKNetwork_Testnet != NULL);
+       LDKNetwork_LDKNetwork_Regtest = (*env)->GetStaticFieldID(env, LDKNetwork_class, "LDKNetwork_Regtest", "Lorg/ldk/enums/LDKNetwork;");
+       CHECK(LDKNetwork_LDKNetwork_Regtest != NULL);
 }
 static inline jclass LDKNetwork_to_java(JNIEnv *env, LDKNetwork val) {
-       // TODO: This is pretty inefficient, we really need to cache the field IDs and class
-       jclass enum_class = (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKNetwork;");
-       assert(enum_class != NULL);
        switch (val) {
-               case LDKNetwork_Bitcoin: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKNetwork_Bitcoin", "Lorg/ldk/impl/bindings$LDKNetwork;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKNetwork_Testnet: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKNetwork_Testnet", "Lorg/ldk/impl/bindings$LDKNetwork;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               case LDKNetwork_Regtest: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKNetwork_Regtest", "Lorg/ldk/impl/bindings$LDKNetwork;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
-               }
-               default: assert(false);
+               case LDKNetwork_Bitcoin:
+                       return (*env)->GetStaticObjectField(env, LDKNetwork_class, LDKNetwork_LDKNetwork_Bitcoin);
+               case LDKNetwork_Testnet:
+                       return (*env)->GetStaticObjectField(env, LDKNetwork_class, LDKNetwork_LDKNetwork_Testnet);
+               case LDKNetwork_Regtest:
+                       return (*env)->GetStaticObjectField(env, LDKNetwork_class, LDKNetwork_LDKNetwork_Regtest);
+               default: abort();
        }
 }
 
@@ -196,79 +393,1111 @@ static inline LDKSecp256k1Error LDKSecp256k1Error_from_java(JNIEnv *env, jclass
                case 7: return LDKSecp256k1Error_NotEnoughMemory;
                case 8: return LDKSecp256k1Error_CallbackPanicked;
        }
-       assert(false);
+       abort();
+}
+static jclass LDKSecp256k1Error_class = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_IncorrectSignature = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_InvalidMessage = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_InvalidPublicKey = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_InvalidSignature = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_InvalidSecretKey = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_InvalidRecoveryId = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_InvalidTweak = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_NotEnoughMemory = NULL;
+static jfieldID LDKSecp256k1Error_LDKSecp256k1Error_CallbackPanicked = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_enums_LDKSecp256k1Error_init (JNIEnv * env, jclass clz) {
+       LDKSecp256k1Error_class = (*env)->NewGlobalRef(env, clz);
+       CHECK(LDKSecp256k1Error_class != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_IncorrectSignature = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_IncorrectSignature", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_IncorrectSignature != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_InvalidMessage = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_InvalidMessage", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_InvalidMessage != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_InvalidPublicKey = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_InvalidPublicKey", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_InvalidPublicKey != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_InvalidSignature = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_InvalidSignature", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_InvalidSignature != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_InvalidSecretKey = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_InvalidSecretKey", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_InvalidSecretKey != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_InvalidRecoveryId = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_InvalidRecoveryId", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_InvalidRecoveryId != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_InvalidTweak = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_InvalidTweak", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_InvalidTweak != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_NotEnoughMemory = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_NotEnoughMemory", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_NotEnoughMemory != NULL);
+       LDKSecp256k1Error_LDKSecp256k1Error_CallbackPanicked = (*env)->GetStaticFieldID(env, LDKSecp256k1Error_class, "LDKSecp256k1Error_CallbackPanicked", "Lorg/ldk/enums/LDKSecp256k1Error;");
+       CHECK(LDKSecp256k1Error_LDKSecp256k1Error_CallbackPanicked != NULL);
 }
 static inline jclass LDKSecp256k1Error_to_java(JNIEnv *env, LDKSecp256k1Error val) {
-       // TODO: This is pretty inefficient, we really need to cache the field IDs and class
-       jclass enum_class = (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-       assert(enum_class != NULL);
        switch (val) {
-               case LDKSecp256k1Error_IncorrectSignature: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_IncorrectSignature", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               case LDKSecp256k1Error_IncorrectSignature:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_IncorrectSignature);
+               case LDKSecp256k1Error_InvalidMessage:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_InvalidMessage);
+               case LDKSecp256k1Error_InvalidPublicKey:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_InvalidPublicKey);
+               case LDKSecp256k1Error_InvalidSignature:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_InvalidSignature);
+               case LDKSecp256k1Error_InvalidSecretKey:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_InvalidSecretKey);
+               case LDKSecp256k1Error_InvalidRecoveryId:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_InvalidRecoveryId);
+               case LDKSecp256k1Error_InvalidTweak:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_InvalidTweak);
+               case LDKSecp256k1Error_NotEnoughMemory:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_NotEnoughMemory);
+               case LDKSecp256k1Error_CallbackPanicked:
+                       return (*env)->GetStaticObjectField(env, LDKSecp256k1Error_class, LDKSecp256k1Error_LDKSecp256k1Error_CallbackPanicked);
+               default: abort();
+       }
+}
+
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1u8_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_u8 *vec = (LDKCVecTempl_u8*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(uint8_t));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1u8_1new(JNIEnv *env, jclass _b, jbyteArray elems){
+       LDKCVecTempl_u8 *ret = MALLOC(sizeof(LDKCVecTempl_u8), "LDKCVecTempl_u8");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(uint8_t) * ret->datalen, "LDKCVecTempl_u8 Data");
+               jbyte *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       ret->data[i] = java_elems[i];
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2TupleTempl_1usize_1_1Transaction_1new(JNIEnv *_env, jclass _b, jlong a, jlong b) {
+       LDKC2TupleTempl_usize__Transaction* ret = MALLOC(sizeof(LDKC2TupleTempl_usize__Transaction), "LDKC2TupleTempl_usize__Transaction");
+       ret->a = a;
+       LDKTransaction b_conv = *(LDKTransaction*)b;
+       ret->b = b_conv;
+       return (long)ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1usizeTransactionZ_1get_1a(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_usize__Transaction *tuple = (LDKC2TupleTempl_usize__Transaction*)ptr;
+       return tuple->a;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1usizeTransactionZ_1get_1b(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_usize__Transaction *tuple = (LDKC2TupleTempl_usize__Transaction*)ptr;
+       LDKTransaction *b_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *b_copy = tuple->b;
+       long b_ref = (long)b_copy;
+       return b_ref;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneChannelMonitorUpdateErrZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_NoneChannelMonitorUpdateErrZ*)arg)->result_ok;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneChannelMonitorUpdateErrZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NoneChannelMonitorUpdateErrZ *val = (LDKCResult_NoneChannelMonitorUpdateErrZ*)arg;
+       CHECK(val->result_ok);
+       return *val->contents.result;
+}
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneChannelMonitorUpdateErrZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NoneChannelMonitorUpdateErrZ *val = (LDKCResult_NoneChannelMonitorUpdateErrZ*)arg;
+       CHECK(!val->result_ok);
+       jclass err_conv = LDKChannelMonitorUpdateErr_to_java(_env, (*val->contents.err));
+       return err_conv;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneMonitorUpdateErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_NoneMonitorUpdateErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneMonitorUpdateErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NoneMonitorUpdateErrorZ *val = (LDKCResult_NoneMonitorUpdateErrorZ*)arg;
+       CHECK(val->result_ok);
+       return *val->contents.result;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneMonitorUpdateErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NoneMonitorUpdateErrorZ *val = (LDKCResult_NoneMonitorUpdateErrorZ*)arg;
+       CHECK(!val->result_ok);
+       LDKMonitorUpdateError err_var = (*val->contents.err);
+       CHECK((((long)err_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&err_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long err_ref = (long)err_var.inner & ~1;
+       return err_ref;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2TupleTempl_1OutPoint_1_1CVec_1u8Z_1new(JNIEnv *_env, jclass _b, jlong a, jbyteArray b) {
+       LDKC2TupleTempl_OutPoint__CVec_u8Z* ret = MALLOC(sizeof(LDKC2TupleTempl_OutPoint__CVec_u8Z), "LDKC2TupleTempl_OutPoint__CVec_u8Z");
+       LDKOutPoint a_conv;
+       a_conv.inner = (void*)(a & (~1));
+       a_conv.is_owned = (a & 1) || (a == 0);
+       if (a_conv.inner != NULL)
+               a_conv = OutPoint_clone(&a_conv);
+       ret->a = a_conv;
+       LDKCVec_u8Z b_ref;
+       b_ref.data = (*_env)->GetByteArrayElements (_env, b, NULL);
+       b_ref.datalen = (*_env)->GetArrayLength (_env, b);
+       ret->b = b_ref;
+       //TODO: Really need to call (*_env)->ReleaseByteArrayElements(_env, b, (int8_t*)b_ref.data, 0); here
+       return (long)ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1OutPointScriptZ_1get_1a(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_OutPoint__CVec_u8Z *tuple = (LDKC2TupleTempl_OutPoint__CVec_u8Z*)ptr;
+       LDKOutPoint a_var = tuple->a;
+       CHECK((((long)a_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&a_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long a_ref = (long)a_var.inner & ~1;
+       return a_ref;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1OutPointScriptZ_1get_1b(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_OutPoint__CVec_u8Z *tuple = (LDKC2TupleTempl_OutPoint__CVec_u8Z*)ptr;
+       LDKCVec_u8Z b_var = tuple->b;
+       jbyteArray b_arr = (*_env)->NewByteArray(_env, b_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, b_arr, 0, b_var.datalen, b_var.data);
+       return b_arr;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1TxOut_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_TxOut *vec = (LDKCVecTempl_TxOut*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKTxOut));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1TxOut_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_TxOut *ret = MALLOC(sizeof(LDKCVecTempl_TxOut), "LDKCVecTempl_TxOut");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKTxOut) * ret->datalen, "LDKCVecTempl_TxOut Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKTxOut arr_elem_conv = *(LDKTxOut*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2TupleTempl_1ThirtyTwoBytes_1_1CVecTempl_1TxOut_1new(JNIEnv *_env, jclass _b, jbyteArray a, jlongArray b) {
+       LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut* ret = MALLOC(sizeof(LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut), "LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut");
+       LDKThirtyTwoBytes a_ref;
+       CHECK((*_env)->GetArrayLength (_env, a) == 32);
+       (*_env)->GetByteArrayRegion (_env, a, 0, 32, a_ref.data);
+       ret->a = a_ref;
+       LDKCVecTempl_TxOut b_constr;
+       b_constr.datalen = (*_env)->GetArrayLength (_env, b);
+       if (b_constr.datalen > 0)
+               b_constr.data = MALLOC(b_constr.datalen * sizeof(LDKTxOut), "LDKCVecTempl_TxOut Elements");
+       else
+               b_constr.data = NULL;
+       long* b_vals = (*_env)->GetLongArrayElements (_env, b, NULL);
+       for (size_t h = 0; h < b_constr.datalen; h++) {
+               long arr_conv_7 = b_vals[h];
+               LDKTxOut arr_conv_7_conv = *(LDKTxOut*)arr_conv_7;
+               FREE((void*)arr_conv_7);
+               b_constr.data[h] = arr_conv_7_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, b, b_vals, 0);
+       ret->b = b_constr;
+       return (long)ret;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1TxidCVec_1TxOutZZ_1get_1a(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut *tuple = (LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut*)ptr;
+       jbyteArray a_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, a_arr, 0, 32, tuple->a.data);
+       return a_arr;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1TxidCVec_1TxOutZZ_1get_1b(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut *tuple = (LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut*)ptr;
+       LDKCVecTempl_TxOut b_var = tuple->b;
+       jlongArray b_arr = (*_env)->NewLongArray(_env, b_var.datalen);
+       jlong *b_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, b_arr, NULL);
+       for (size_t h = 0; h < b_var.datalen; h++) {
+               long arr_conv_7_ref = (long)&b_var.data[h];
+               b_arr_ptr[h] = arr_conv_7_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, b_arr, b_arr_ptr, 0);
+       return b_arr;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2TupleTempl_1u64_1_1u64_1new(JNIEnv *_env, jclass _b, jlong a, jlong b) {
+       LDKC2TupleTempl_u64__u64* ret = MALLOC(sizeof(LDKC2TupleTempl_u64__u64), "LDKC2TupleTempl_u64__u64");
+       ret->a = a;
+       ret->b = b;
+       return (long)ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1u64u64Z_1get_1a(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_u64__u64 *tuple = (LDKC2TupleTempl_u64__u64*)ptr;
+       return tuple->a;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1u64u64Z_1get_1b(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_u64__u64 *tuple = (LDKC2TupleTempl_u64__u64*)ptr;
+       return tuple->b;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1Signature_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_Signature *vec = (LDKCVecTempl_Signature*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKSignature));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2TupleTempl_1Signature_1_1CVecTempl_1Signature_1new(JNIEnv *_env, jclass _b, jbyteArray a, jobjectArray b) {
+       LDKC2TupleTempl_Signature__CVecTempl_Signature* ret = MALLOC(sizeof(LDKC2TupleTempl_Signature__CVecTempl_Signature), "LDKC2TupleTempl_Signature__CVecTempl_Signature");
+       LDKSignature a_ref;
+       CHECK((*_env)->GetArrayLength (_env, a) == 64);
+       (*_env)->GetByteArrayRegion (_env, a, 0, 64, a_ref.compact_form);
+       ret->a = a_ref;
+       LDKCVecTempl_Signature b_constr;
+       b_constr.datalen = (*_env)->GetArrayLength (_env, b);
+       if (b_constr.datalen > 0)
+               b_constr.data = MALLOC(b_constr.datalen * sizeof(LDKSignature), "LDKCVecTempl_Signature Elements");
+       else
+               b_constr.data = NULL;
+       for (size_t i = 0; i < b_constr.datalen; i++) {
+               jobject arr_conv_8 = (*_env)->GetObjectArrayElement(_env, b, i);
+               LDKSignature arr_conv_8_ref;
+               CHECK((*_env)->GetArrayLength (_env, arr_conv_8) == 64);
+               (*_env)->GetByteArrayRegion (_env, arr_conv_8, 0, 64, arr_conv_8_ref.compact_form);
+               b_constr.data[i] = arr_conv_8_ref;
+       }
+       ret->b = b_constr;
+       return (long)ret;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1SignatureCVec_1SignatureZZ_1get_1a(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_Signature__CVecTempl_Signature *tuple = (LDKC2TupleTempl_Signature__CVecTempl_Signature*)ptr;
+       jbyteArray a_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, a_arr, 0, 64, tuple->a.compact_form);
+       return a_arr;
+}
+JNIEXPORT jobjectArray JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1SignatureCVec_1SignatureZZ_1get_1b(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_Signature__CVecTempl_Signature *tuple = (LDKC2TupleTempl_Signature__CVecTempl_Signature*)ptr;
+       LDKCVecTempl_Signature b_var = tuple->b;
+       jobjectArray b_arr = (*_env)->NewObjectArray(_env, b_var.datalen, arr_of_B_clz, NULL);
+       for (size_t i = 0; i < b_var.datalen; i++) {
+               jbyteArray arr_conv_8_arr = (*_env)->NewByteArray(_env, 64);
+               (*_env)->SetByteArrayRegion(_env, arr_conv_8_arr, 0, 64, b_var.data[i].compact_form);
+               (*_env)->SetObjectArrayElement(_env, b_arr, i, arr_conv_8_arr);
+       }
+       return b_arr;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1C2Tuple_1SignatureCVec_1SignatureZZNoneZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ*)arg)->result_ok;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1C2Tuple_1SignatureCVec_1SignatureZZNoneZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ *val = (LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ*)arg;
+       CHECK(val->result_ok);
+       long res_ref = (long)&(*val->contents.result);
+       return res_ref;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1C2Tuple_1SignatureCVec_1SignatureZZNoneZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ *val = (LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ*)arg;
+       CHECK(!val->result_ok);
+       return *val->contents.err;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1SignatureNoneZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_SignatureNoneZ*)arg)->result_ok;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKCResult_1SignatureNoneZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_SignatureNoneZ *val = (LDKCResult_SignatureNoneZ*)arg;
+       CHECK(val->result_ok);
+       jbyteArray res_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, res_arr, 0, 64, (*val->contents.result).compact_form);
+       return res_arr;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1SignatureNoneZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_SignatureNoneZ *val = (LDKCResult_SignatureNoneZ*)arg;
+       CHECK(!val->result_ok);
+       return *val->contents.err;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1CVec_1SignatureZNoneZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_CVec_SignatureZNoneZ*)arg)->result_ok;
+}
+JNIEXPORT jobjectArray JNICALL Java_org_ldk_impl_bindings_LDKCResult_1CVec_1SignatureZNoneZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_CVec_SignatureZNoneZ *val = (LDKCResult_CVec_SignatureZNoneZ*)arg;
+       CHECK(val->result_ok);
+       LDKCVecTempl_Signature res_var = (*val->contents.result);
+       jobjectArray res_arr = (*_env)->NewObjectArray(_env, res_var.datalen, arr_of_B_clz, NULL);
+       for (size_t i = 0; i < res_var.datalen; i++) {
+               jbyteArray arr_conv_8_arr = (*_env)->NewByteArray(_env, 64);
+               (*_env)->SetByteArrayRegion(_env, arr_conv_8_arr, 0, 64, res_var.data[i].compact_form);
+               (*_env)->SetObjectArrayElement(_env, res_arr, i, arr_conv_8_arr);
+       }
+       return res_arr;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1CVec_1SignatureZNoneZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_CVec_SignatureZNoneZ *val = (LDKCResult_CVec_SignatureZNoneZ*)arg;
+       CHECK(!val->result_ok);
+       return *val->contents.err;
+}
+static jclass LDKAPIError_APIMisuseError_class = NULL;
+static jmethodID LDKAPIError_APIMisuseError_meth = NULL;
+static jclass LDKAPIError_FeeRateTooHigh_class = NULL;
+static jmethodID LDKAPIError_FeeRateTooHigh_meth = NULL;
+static jclass LDKAPIError_RouteError_class = NULL;
+static jmethodID LDKAPIError_RouteError_meth = NULL;
+static jclass LDKAPIError_ChannelUnavailable_class = NULL;
+static jmethodID LDKAPIError_ChannelUnavailable_meth = NULL;
+static jclass LDKAPIError_MonitorUpdateFailed_class = NULL;
+static jmethodID LDKAPIError_MonitorUpdateFailed_meth = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024LDKAPIError_init (JNIEnv * env, jclass _a) {
+       LDKAPIError_APIMisuseError_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKAPIError$APIMisuseError;"));
+       CHECK(LDKAPIError_APIMisuseError_class != NULL);
+       LDKAPIError_APIMisuseError_meth = (*env)->GetMethodID(env, LDKAPIError_APIMisuseError_class, "<init>", "([B)V");
+       CHECK(LDKAPIError_APIMisuseError_meth != NULL);
+       LDKAPIError_FeeRateTooHigh_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKAPIError$FeeRateTooHigh;"));
+       CHECK(LDKAPIError_FeeRateTooHigh_class != NULL);
+       LDKAPIError_FeeRateTooHigh_meth = (*env)->GetMethodID(env, LDKAPIError_FeeRateTooHigh_class, "<init>", "([BI)V");
+       CHECK(LDKAPIError_FeeRateTooHigh_meth != NULL);
+       LDKAPIError_RouteError_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKAPIError$RouteError;"));
+       CHECK(LDKAPIError_RouteError_class != NULL);
+       LDKAPIError_RouteError_meth = (*env)->GetMethodID(env, LDKAPIError_RouteError_class, "<init>", "(Ljava/lang/String;)V");
+       CHECK(LDKAPIError_RouteError_meth != NULL);
+       LDKAPIError_ChannelUnavailable_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKAPIError$ChannelUnavailable;"));
+       CHECK(LDKAPIError_ChannelUnavailable_class != NULL);
+       LDKAPIError_ChannelUnavailable_meth = (*env)->GetMethodID(env, LDKAPIError_ChannelUnavailable_class, "<init>", "([B)V");
+       CHECK(LDKAPIError_ChannelUnavailable_meth != NULL);
+       LDKAPIError_MonitorUpdateFailed_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKAPIError$MonitorUpdateFailed;"));
+       CHECK(LDKAPIError_MonitorUpdateFailed_class != NULL);
+       LDKAPIError_MonitorUpdateFailed_meth = (*env)->GetMethodID(env, LDKAPIError_MonitorUpdateFailed_class, "<init>", "()V");
+       CHECK(LDKAPIError_MonitorUpdateFailed_meth != NULL);
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKAPIError_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {
+       LDKAPIError *obj = (LDKAPIError*)ptr;
+       switch(obj->tag) {
+               case LDKAPIError_APIMisuseError: {
+                       LDKCVec_u8Z err_var = obj->api_misuse_error.err;
+                       jbyteArray err_arr = (*_env)->NewByteArray(_env, err_var.datalen);
+                       (*_env)->SetByteArrayRegion(_env, err_arr, 0, err_var.datalen, err_var.data);
+                       return (*_env)->NewObject(_env, LDKAPIError_APIMisuseError_class, LDKAPIError_APIMisuseError_meth, err_arr);
                }
-               case LDKSecp256k1Error_InvalidMessage: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_InvalidMessage", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               case LDKAPIError_FeeRateTooHigh: {
+                       LDKCVec_u8Z err_var = obj->fee_rate_too_high.err;
+                       jbyteArray err_arr = (*_env)->NewByteArray(_env, err_var.datalen);
+                       (*_env)->SetByteArrayRegion(_env, err_arr, 0, err_var.datalen, err_var.data);
+                       return (*_env)->NewObject(_env, LDKAPIError_FeeRateTooHigh_class, LDKAPIError_FeeRateTooHigh_meth, err_arr, obj->fee_rate_too_high.feerate);
                }
-               case LDKSecp256k1Error_InvalidPublicKey: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_InvalidPublicKey", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               case LDKAPIError_RouteError: {
+                       LDKStr err_str = obj->route_error.err;
+                       char* err_buf = MALLOC(err_str.len + 1, "str conv buf");
+                       memcpy(err_buf, err_str.chars, err_str.len);
+                       err_buf[err_str.len] = 0;
+                       jstring err_conv = (*_env)->NewStringUTF(_env, err_str.chars);
+                       FREE(err_buf);
+                       return (*_env)->NewObject(_env, LDKAPIError_RouteError_class, LDKAPIError_RouteError_meth, err_conv);
                }
-               case LDKSecp256k1Error_InvalidSignature: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_InvalidSignature", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               case LDKAPIError_ChannelUnavailable: {
+                       LDKCVec_u8Z err_var = obj->channel_unavailable.err;
+                       jbyteArray err_arr = (*_env)->NewByteArray(_env, err_var.datalen);
+                       (*_env)->SetByteArrayRegion(_env, err_arr, 0, err_var.datalen, err_var.data);
+                       return (*_env)->NewObject(_env, LDKAPIError_ChannelUnavailable_class, LDKAPIError_ChannelUnavailable_meth, err_arr);
                }
-               case LDKSecp256k1Error_InvalidSecretKey: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_InvalidSecretKey", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               case LDKAPIError_MonitorUpdateFailed: {
+                       return (*_env)->NewObject(_env, LDKAPIError_MonitorUpdateFailed_class, LDKAPIError_MonitorUpdateFailed_meth);
                }
-               case LDKSecp256k1Error_InvalidRecoveryId: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_InvalidRecoveryId", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               default: abort();
+       }
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneAPIErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_NoneAPIErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneAPIErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NoneAPIErrorZ *val = (LDKCResult_NoneAPIErrorZ*)arg;
+       CHECK(val->result_ok);
+       return *val->contents.result;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NoneAPIErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NoneAPIErrorZ *val = (LDKCResult_NoneAPIErrorZ*)arg;
+       CHECK(!val->result_ok);
+       long err_ref = (long)&(*val->contents.err);
+       return err_ref;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NonePaymentSendFailureZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_NonePaymentSendFailureZ*)arg)->result_ok;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NonePaymentSendFailureZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NonePaymentSendFailureZ *val = (LDKCResult_NonePaymentSendFailureZ*)arg;
+       CHECK(val->result_ok);
+       return *val->contents.result;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NonePaymentSendFailureZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NonePaymentSendFailureZ *val = (LDKCResult_NonePaymentSendFailureZ*)arg;
+       CHECK(!val->result_ok);
+       LDKPaymentSendFailure err_var = (*val->contents.err);
+       CHECK((((long)err_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&err_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long err_ref = (long)err_var.inner & ~1;
+       return err_ref;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC3TupleTempl_1ChannelAnnouncement_1_1ChannelUpdate_1_1ChannelUpdate_1new(JNIEnv *_env, jclass _b, jlong a, jlong b, jlong c) {
+       LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate* ret = MALLOC(sizeof(LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate), "LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate");
+       LDKChannelAnnouncement a_conv;
+       a_conv.inner = (void*)(a & (~1));
+       a_conv.is_owned = (a & 1) || (a == 0);
+       if (a_conv.inner != NULL)
+               a_conv = ChannelAnnouncement_clone(&a_conv);
+       ret->a = a_conv;
+       LDKChannelUpdate b_conv;
+       b_conv.inner = (void*)(b & (~1));
+       b_conv.is_owned = (b & 1) || (b == 0);
+       if (b_conv.inner != NULL)
+               b_conv = ChannelUpdate_clone(&b_conv);
+       ret->b = b_conv;
+       LDKChannelUpdate c_conv;
+       c_conv.inner = (void*)(c & (~1));
+       c_conv.is_owned = (c & 1) || (c == 0);
+       if (c_conv.inner != NULL)
+               c_conv = ChannelUpdate_clone(&c_conv);
+       ret->c = c_conv;
+       return (long)ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZ_1get_1a(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate *tuple = (LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate*)ptr;
+       LDKChannelAnnouncement a_var = tuple->a;
+       CHECK((((long)a_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&a_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long a_ref = (long)a_var.inner & ~1;
+       return a_ref;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZ_1get_1b(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate *tuple = (LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate*)ptr;
+       LDKChannelUpdate b_var = tuple->b;
+       CHECK((((long)b_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&b_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long b_ref = (long)b_var.inner & ~1;
+       return b_ref;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZ_1get_1c(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate *tuple = (LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate*)ptr;
+       LDKChannelUpdate c_var = tuple->c;
+       CHECK((((long)c_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&c_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long c_ref = (long)c_var.inner & ~1;
+       return c_ref;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NonePeerHandleErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_NonePeerHandleErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NonePeerHandleErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NonePeerHandleErrorZ *val = (LDKCResult_NonePeerHandleErrorZ*)arg;
+       CHECK(val->result_ok);
+       return *val->contents.result;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1NonePeerHandleErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_NonePeerHandleErrorZ *val = (LDKCResult_NonePeerHandleErrorZ*)arg;
+       CHECK(!val->result_ok);
+       LDKPeerHandleError err_var = (*val->contents.err);
+       CHECK((((long)err_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&err_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long err_ref = (long)err_var.inner & ~1;
+       return err_ref;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2TupleTempl_1HTLCOutputInCommitment_1_1Signature_1new(JNIEnv *_env, jclass _b, jlong a, jbyteArray b) {
+       LDKC2TupleTempl_HTLCOutputInCommitment__Signature* ret = MALLOC(sizeof(LDKC2TupleTempl_HTLCOutputInCommitment__Signature), "LDKC2TupleTempl_HTLCOutputInCommitment__Signature");
+       LDKHTLCOutputInCommitment a_conv;
+       a_conv.inner = (void*)(a & (~1));
+       a_conv.is_owned = (a & 1) || (a == 0);
+       if (a_conv.inner != NULL)
+               a_conv = HTLCOutputInCommitment_clone(&a_conv);
+       ret->a = a_conv;
+       LDKSignature b_ref;
+       CHECK((*_env)->GetArrayLength (_env, b) == 64);
+       (*_env)->GetByteArrayRegion (_env, b, 0, 64, b_ref.compact_form);
+       ret->b = b_ref;
+       return (long)ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1HTLCOutputInCommitmentSignatureZ_1get_1a(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_HTLCOutputInCommitment__Signature *tuple = (LDKC2TupleTempl_HTLCOutputInCommitment__Signature*)ptr;
+       LDKHTLCOutputInCommitment a_var = tuple->a;
+       CHECK((((long)a_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&a_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long a_ref = (long)a_var.inner & ~1;
+       return a_ref;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKC2Tuple_1HTLCOutputInCommitmentSignatureZ_1get_1b(JNIEnv *_env, jclass _b, jlong ptr) {
+       LDKC2TupleTempl_HTLCOutputInCommitment__Signature *tuple = (LDKC2TupleTempl_HTLCOutputInCommitment__Signature*)ptr;
+       jbyteArray b_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, b_arr, 0, 64, tuple->b.compact_form);
+       return b_arr;
+}
+static jclass LDKSpendableOutputDescriptor_StaticOutput_class = NULL;
+static jmethodID LDKSpendableOutputDescriptor_StaticOutput_meth = NULL;
+static jclass LDKSpendableOutputDescriptor_DynamicOutputP2WSH_class = NULL;
+static jmethodID LDKSpendableOutputDescriptor_DynamicOutputP2WSH_meth = NULL;
+static jclass LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_class = NULL;
+static jmethodID LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_meth = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024LDKSpendableOutputDescriptor_init (JNIEnv * env, jclass _a) {
+       LDKSpendableOutputDescriptor_StaticOutput_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKSpendableOutputDescriptor$StaticOutput;"));
+       CHECK(LDKSpendableOutputDescriptor_StaticOutput_class != NULL);
+       LDKSpendableOutputDescriptor_StaticOutput_meth = (*env)->GetMethodID(env, LDKSpendableOutputDescriptor_StaticOutput_class, "<init>", "(JJ)V");
+       CHECK(LDKSpendableOutputDescriptor_StaticOutput_meth != NULL);
+       LDKSpendableOutputDescriptor_DynamicOutputP2WSH_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKSpendableOutputDescriptor$DynamicOutputP2WSH;"));
+       CHECK(LDKSpendableOutputDescriptor_DynamicOutputP2WSH_class != NULL);
+       LDKSpendableOutputDescriptor_DynamicOutputP2WSH_meth = (*env)->GetMethodID(env, LDKSpendableOutputDescriptor_DynamicOutputP2WSH_class, "<init>", "(J[BSJJ[B)V");
+       CHECK(LDKSpendableOutputDescriptor_DynamicOutputP2WSH_meth != NULL);
+       LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKSpendableOutputDescriptor$StaticOutputCounterpartyPayment;"));
+       CHECK(LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_class != NULL);
+       LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_meth = (*env)->GetMethodID(env, LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_class, "<init>", "(JJJ)V");
+       CHECK(LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_meth != NULL);
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKSpendableOutputDescriptor_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {
+       LDKSpendableOutputDescriptor *obj = (LDKSpendableOutputDescriptor*)ptr;
+       switch(obj->tag) {
+               case LDKSpendableOutputDescriptor_StaticOutput: {
+                       LDKOutPoint outpoint_var = obj->static_output.outpoint;
+                       CHECK((((long)outpoint_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&outpoint_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long outpoint_ref = (long)outpoint_var.inner & ~1;
+                       long output_ref = (long)&obj->static_output.output;
+                       return (*_env)->NewObject(_env, LDKSpendableOutputDescriptor_StaticOutput_class, LDKSpendableOutputDescriptor_StaticOutput_meth, outpoint_ref, output_ref);
                }
-               case LDKSecp256k1Error_InvalidTweak: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_InvalidTweak", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               case LDKSpendableOutputDescriptor_DynamicOutputP2WSH: {
+                       LDKOutPoint outpoint_var = obj->dynamic_output_p2wsh.outpoint;
+                       CHECK((((long)outpoint_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&outpoint_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long outpoint_ref = (long)outpoint_var.inner & ~1;
+                       jbyteArray per_commitment_point_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, per_commitment_point_arr, 0, 33, obj->dynamic_output_p2wsh.per_commitment_point.compressed_form);
+                       long output_ref = (long)&obj->dynamic_output_p2wsh.output;
+                       long key_derivation_params_ref = (long)&obj->dynamic_output_p2wsh.key_derivation_params;
+                       jbyteArray revocation_pubkey_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, revocation_pubkey_arr, 0, 33, obj->dynamic_output_p2wsh.revocation_pubkey.compressed_form);
+                       return (*_env)->NewObject(_env, LDKSpendableOutputDescriptor_DynamicOutputP2WSH_class, LDKSpendableOutputDescriptor_DynamicOutputP2WSH_meth, outpoint_ref, per_commitment_point_arr, obj->dynamic_output_p2wsh.to_self_delay, output_ref, key_derivation_params_ref, revocation_pubkey_arr);
                }
-               case LDKSecp256k1Error_NotEnoughMemory: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_NotEnoughMemory", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               case LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment: {
+                       LDKOutPoint outpoint_var = obj->static_output_counterparty_payment.outpoint;
+                       CHECK((((long)outpoint_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&outpoint_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long outpoint_ref = (long)outpoint_var.inner & ~1;
+                       long output_ref = (long)&obj->static_output_counterparty_payment.output;
+                       long key_derivation_params_ref = (long)&obj->static_output_counterparty_payment.key_derivation_params;
+                       return (*_env)->NewObject(_env, LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_class, LDKSpendableOutputDescriptor_StaticOutputCounterpartyPayment_meth, outpoint_ref, output_ref, key_derivation_params_ref);
                }
-               case LDKSecp256k1Error_CallbackPanicked: {
-                       jfieldID field = (*env)->GetStaticFieldID(env, enum_class, "LDKSecp256k1Error_CallbackPanicked", "Lorg/ldk/impl/bindings$LDKSecp256k1Error;");
-                       assert(field != NULL);
-                       return (*env)->GetStaticObjectField(env, enum_class, field);
+               default: abort();
+       }
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1SpendableOutputDescriptor_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_SpendableOutputDescriptor *vec = (LDKCVecTempl_SpendableOutputDescriptor*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKSpendableOutputDescriptor));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1SpendableOutputDescriptor_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_SpendableOutputDescriptor *ret = MALLOC(sizeof(LDKCVecTempl_SpendableOutputDescriptor), "LDKCVecTempl_SpendableOutputDescriptor");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKSpendableOutputDescriptor) * ret->datalen, "LDKCVecTempl_SpendableOutputDescriptor Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKSpendableOutputDescriptor arr_elem_conv = *(LDKSpendableOutputDescriptor*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
                }
-               default: assert(false);
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
        }
+       return (long)ret;
+}
+static jclass LDKEvent_FundingGenerationReady_class = NULL;
+static jmethodID LDKEvent_FundingGenerationReady_meth = NULL;
+static jclass LDKEvent_FundingBroadcastSafe_class = NULL;
+static jmethodID LDKEvent_FundingBroadcastSafe_meth = NULL;
+static jclass LDKEvent_PaymentReceived_class = NULL;
+static jmethodID LDKEvent_PaymentReceived_meth = NULL;
+static jclass LDKEvent_PaymentSent_class = NULL;
+static jmethodID LDKEvent_PaymentSent_meth = NULL;
+static jclass LDKEvent_PaymentFailed_class = NULL;
+static jmethodID LDKEvent_PaymentFailed_meth = NULL;
+static jclass LDKEvent_PendingHTLCsForwardable_class = NULL;
+static jmethodID LDKEvent_PendingHTLCsForwardable_meth = NULL;
+static jclass LDKEvent_SpendableOutputs_class = NULL;
+static jmethodID LDKEvent_SpendableOutputs_meth = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024LDKEvent_init (JNIEnv * env, jclass _a) {
+       LDKEvent_FundingGenerationReady_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKEvent$FundingGenerationReady;"));
+       CHECK(LDKEvent_FundingGenerationReady_class != NULL);
+       LDKEvent_FundingGenerationReady_meth = (*env)->GetMethodID(env, LDKEvent_FundingGenerationReady_class, "<init>", "([BJ[BJ)V");
+       CHECK(LDKEvent_FundingGenerationReady_meth != NULL);
+       LDKEvent_FundingBroadcastSafe_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKEvent$FundingBroadcastSafe;"));
+       CHECK(LDKEvent_FundingBroadcastSafe_class != NULL);
+       LDKEvent_FundingBroadcastSafe_meth = (*env)->GetMethodID(env, LDKEvent_FundingBroadcastSafe_class, "<init>", "(JJ)V");
+       CHECK(LDKEvent_FundingBroadcastSafe_meth != NULL);
+       LDKEvent_PaymentReceived_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKEvent$PaymentReceived;"));
+       CHECK(LDKEvent_PaymentReceived_class != NULL);
+       LDKEvent_PaymentReceived_meth = (*env)->GetMethodID(env, LDKEvent_PaymentReceived_class, "<init>", "([B[BJ)V");
+       CHECK(LDKEvent_PaymentReceived_meth != NULL);
+       LDKEvent_PaymentSent_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKEvent$PaymentSent;"));
+       CHECK(LDKEvent_PaymentSent_class != NULL);
+       LDKEvent_PaymentSent_meth = (*env)->GetMethodID(env, LDKEvent_PaymentSent_class, "<init>", "([B)V");
+       CHECK(LDKEvent_PaymentSent_meth != NULL);
+       LDKEvent_PaymentFailed_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKEvent$PaymentFailed;"));
+       CHECK(LDKEvent_PaymentFailed_class != NULL);
+       LDKEvent_PaymentFailed_meth = (*env)->GetMethodID(env, LDKEvent_PaymentFailed_class, "<init>", "([BZ)V");
+       CHECK(LDKEvent_PaymentFailed_meth != NULL);
+       LDKEvent_PendingHTLCsForwardable_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKEvent$PendingHTLCsForwardable;"));
+       CHECK(LDKEvent_PendingHTLCsForwardable_class != NULL);
+       LDKEvent_PendingHTLCsForwardable_meth = (*env)->GetMethodID(env, LDKEvent_PendingHTLCsForwardable_class, "<init>", "(J)V");
+       CHECK(LDKEvent_PendingHTLCsForwardable_meth != NULL);
+       LDKEvent_SpendableOutputs_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKEvent$SpendableOutputs;"));
+       CHECK(LDKEvent_SpendableOutputs_class != NULL);
+       LDKEvent_SpendableOutputs_meth = (*env)->GetMethodID(env, LDKEvent_SpendableOutputs_class, "<init>", "([J)V");
+       CHECK(LDKEvent_SpendableOutputs_meth != NULL);
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKEvent_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {
+       LDKEvent *obj = (LDKEvent*)ptr;
+       switch(obj->tag) {
+               case LDKEvent_FundingGenerationReady: {
+                       jbyteArray temporary_channel_id_arr = (*_env)->NewByteArray(_env, 32);
+                       (*_env)->SetByteArrayRegion(_env, temporary_channel_id_arr, 0, 32, obj->funding_generation_ready.temporary_channel_id.data);
+                       LDKCVec_u8Z output_script_var = obj->funding_generation_ready.output_script;
+                       jbyteArray output_script_arr = (*_env)->NewByteArray(_env, output_script_var.datalen);
+                       (*_env)->SetByteArrayRegion(_env, output_script_arr, 0, output_script_var.datalen, output_script_var.data);
+                       return (*_env)->NewObject(_env, LDKEvent_FundingGenerationReady_class, LDKEvent_FundingGenerationReady_meth, temporary_channel_id_arr, obj->funding_generation_ready.channel_value_satoshis, output_script_arr, obj->funding_generation_ready.user_channel_id);
+               }
+               case LDKEvent_FundingBroadcastSafe: {
+                       LDKOutPoint funding_txo_var = obj->funding_broadcast_safe.funding_txo;
+                       CHECK((((long)funding_txo_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&funding_txo_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long funding_txo_ref = (long)funding_txo_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKEvent_FundingBroadcastSafe_class, LDKEvent_FundingBroadcastSafe_meth, funding_txo_ref, obj->funding_broadcast_safe.user_channel_id);
+               }
+               case LDKEvent_PaymentReceived: {
+                       jbyteArray payment_hash_arr = (*_env)->NewByteArray(_env, 32);
+                       (*_env)->SetByteArrayRegion(_env, payment_hash_arr, 0, 32, obj->payment_received.payment_hash.data);
+                       jbyteArray payment_secret_arr = (*_env)->NewByteArray(_env, 32);
+                       (*_env)->SetByteArrayRegion(_env, payment_secret_arr, 0, 32, obj->payment_received.payment_secret.data);
+                       return (*_env)->NewObject(_env, LDKEvent_PaymentReceived_class, LDKEvent_PaymentReceived_meth, payment_hash_arr, payment_secret_arr, obj->payment_received.amt);
+               }
+               case LDKEvent_PaymentSent: {
+                       jbyteArray payment_preimage_arr = (*_env)->NewByteArray(_env, 32);
+                       (*_env)->SetByteArrayRegion(_env, payment_preimage_arr, 0, 32, obj->payment_sent.payment_preimage.data);
+                       return (*_env)->NewObject(_env, LDKEvent_PaymentSent_class, LDKEvent_PaymentSent_meth, payment_preimage_arr);
+               }
+               case LDKEvent_PaymentFailed: {
+                       jbyteArray payment_hash_arr = (*_env)->NewByteArray(_env, 32);
+                       (*_env)->SetByteArrayRegion(_env, payment_hash_arr, 0, 32, obj->payment_failed.payment_hash.data);
+                       return (*_env)->NewObject(_env, LDKEvent_PaymentFailed_class, LDKEvent_PaymentFailed_meth, payment_hash_arr, obj->payment_failed.rejected_by_dest);
+               }
+               case LDKEvent_PendingHTLCsForwardable: {
+                       return (*_env)->NewObject(_env, LDKEvent_PendingHTLCsForwardable_class, LDKEvent_PendingHTLCsForwardable_meth, obj->pending_htl_cs_forwardable.time_forwardable);
+               }
+               case LDKEvent_SpendableOutputs: {
+                       LDKCVec_SpendableOutputDescriptorZ outputs_var = obj->spendable_outputs.outputs;
+                       jlongArray outputs_arr = (*_env)->NewLongArray(_env, outputs_var.datalen);
+                       jlong *outputs_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, outputs_arr, NULL);
+                       for (size_t b = 0; b < outputs_var.datalen; b++) {
+                               long arr_conv_27_ref = (long)&outputs_var.data[b];
+                               outputs_arr_ptr[b] = arr_conv_27_ref;
+                       }
+                       (*_env)->ReleasePrimitiveArrayCritical(_env, outputs_arr, outputs_arr_ptr, 0);
+                       return (*_env)->NewObject(_env, LDKEvent_SpendableOutputs_class, LDKEvent_SpendableOutputs_meth, outputs_arr);
+               }
+               default: abort();
+       }
+}
+static jclass LDKErrorAction_DisconnectPeer_class = NULL;
+static jmethodID LDKErrorAction_DisconnectPeer_meth = NULL;
+static jclass LDKErrorAction_IgnoreError_class = NULL;
+static jmethodID LDKErrorAction_IgnoreError_meth = NULL;
+static jclass LDKErrorAction_SendErrorMessage_class = NULL;
+static jmethodID LDKErrorAction_SendErrorMessage_meth = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024LDKErrorAction_init (JNIEnv * env, jclass _a) {
+       LDKErrorAction_DisconnectPeer_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKErrorAction$DisconnectPeer;"));
+       CHECK(LDKErrorAction_DisconnectPeer_class != NULL);
+       LDKErrorAction_DisconnectPeer_meth = (*env)->GetMethodID(env, LDKErrorAction_DisconnectPeer_class, "<init>", "(J)V");
+       CHECK(LDKErrorAction_DisconnectPeer_meth != NULL);
+       LDKErrorAction_IgnoreError_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKErrorAction$IgnoreError;"));
+       CHECK(LDKErrorAction_IgnoreError_class != NULL);
+       LDKErrorAction_IgnoreError_meth = (*env)->GetMethodID(env, LDKErrorAction_IgnoreError_class, "<init>", "()V");
+       CHECK(LDKErrorAction_IgnoreError_meth != NULL);
+       LDKErrorAction_SendErrorMessage_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKErrorAction$SendErrorMessage;"));
+       CHECK(LDKErrorAction_SendErrorMessage_class != NULL);
+       LDKErrorAction_SendErrorMessage_meth = (*env)->GetMethodID(env, LDKErrorAction_SendErrorMessage_class, "<init>", "(J)V");
+       CHECK(LDKErrorAction_SendErrorMessage_meth != NULL);
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKErrorAction_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {
+       LDKErrorAction *obj = (LDKErrorAction*)ptr;
+       switch(obj->tag) {
+               case LDKErrorAction_DisconnectPeer: {
+                       LDKErrorMessage msg_var = obj->disconnect_peer.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKErrorAction_DisconnectPeer_class, LDKErrorAction_DisconnectPeer_meth, msg_ref);
+               }
+               case LDKErrorAction_IgnoreError: {
+                       return (*_env)->NewObject(_env, LDKErrorAction_IgnoreError_class, LDKErrorAction_IgnoreError_meth);
+               }
+               case LDKErrorAction_SendErrorMessage: {
+                       LDKErrorMessage msg_var = obj->send_error_message.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKErrorAction_SendErrorMessage_class, LDKErrorAction_SendErrorMessage_meth, msg_ref);
+               }
+               default: abort();
+       }
+}
+static jclass LDKHTLCFailChannelUpdate_ChannelUpdateMessage_class = NULL;
+static jmethodID LDKHTLCFailChannelUpdate_ChannelUpdateMessage_meth = NULL;
+static jclass LDKHTLCFailChannelUpdate_ChannelClosed_class = NULL;
+static jmethodID LDKHTLCFailChannelUpdate_ChannelClosed_meth = NULL;
+static jclass LDKHTLCFailChannelUpdate_NodeFailure_class = NULL;
+static jmethodID LDKHTLCFailChannelUpdate_NodeFailure_meth = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024LDKHTLCFailChannelUpdate_init (JNIEnv * env, jclass _a) {
+       LDKHTLCFailChannelUpdate_ChannelUpdateMessage_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKHTLCFailChannelUpdate$ChannelUpdateMessage;"));
+       CHECK(LDKHTLCFailChannelUpdate_ChannelUpdateMessage_class != NULL);
+       LDKHTLCFailChannelUpdate_ChannelUpdateMessage_meth = (*env)->GetMethodID(env, LDKHTLCFailChannelUpdate_ChannelUpdateMessage_class, "<init>", "(J)V");
+       CHECK(LDKHTLCFailChannelUpdate_ChannelUpdateMessage_meth != NULL);
+       LDKHTLCFailChannelUpdate_ChannelClosed_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKHTLCFailChannelUpdate$ChannelClosed;"));
+       CHECK(LDKHTLCFailChannelUpdate_ChannelClosed_class != NULL);
+       LDKHTLCFailChannelUpdate_ChannelClosed_meth = (*env)->GetMethodID(env, LDKHTLCFailChannelUpdate_ChannelClosed_class, "<init>", "(JZ)V");
+       CHECK(LDKHTLCFailChannelUpdate_ChannelClosed_meth != NULL);
+       LDKHTLCFailChannelUpdate_NodeFailure_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKHTLCFailChannelUpdate$NodeFailure;"));
+       CHECK(LDKHTLCFailChannelUpdate_NodeFailure_class != NULL);
+       LDKHTLCFailChannelUpdate_NodeFailure_meth = (*env)->GetMethodID(env, LDKHTLCFailChannelUpdate_NodeFailure_class, "<init>", "([BZ)V");
+       CHECK(LDKHTLCFailChannelUpdate_NodeFailure_meth != NULL);
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKHTLCFailChannelUpdate_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {
+       LDKHTLCFailChannelUpdate *obj = (LDKHTLCFailChannelUpdate*)ptr;
+       switch(obj->tag) {
+               case LDKHTLCFailChannelUpdate_ChannelUpdateMessage: {
+                       LDKChannelUpdate msg_var = obj->channel_update_message.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKHTLCFailChannelUpdate_ChannelUpdateMessage_class, LDKHTLCFailChannelUpdate_ChannelUpdateMessage_meth, msg_ref);
+               }
+               case LDKHTLCFailChannelUpdate_ChannelClosed: {
+                       return (*_env)->NewObject(_env, LDKHTLCFailChannelUpdate_ChannelClosed_class, LDKHTLCFailChannelUpdate_ChannelClosed_meth, obj->channel_closed.short_channel_id, obj->channel_closed.is_permanent);
+               }
+               case LDKHTLCFailChannelUpdate_NodeFailure: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->node_failure.node_id.compressed_form);
+                       return (*_env)->NewObject(_env, LDKHTLCFailChannelUpdate_NodeFailure_class, LDKHTLCFailChannelUpdate_NodeFailure_meth, node_id_arr, obj->node_failure.is_permanent);
+               }
+               default: abort();
+       }
+}
+static jclass LDKMessageSendEvent_SendAcceptChannel_class = NULL;
+static jmethodID LDKMessageSendEvent_SendAcceptChannel_meth = NULL;
+static jclass LDKMessageSendEvent_SendOpenChannel_class = NULL;
+static jmethodID LDKMessageSendEvent_SendOpenChannel_meth = NULL;
+static jclass LDKMessageSendEvent_SendFundingCreated_class = NULL;
+static jmethodID LDKMessageSendEvent_SendFundingCreated_meth = NULL;
+static jclass LDKMessageSendEvent_SendFundingSigned_class = NULL;
+static jmethodID LDKMessageSendEvent_SendFundingSigned_meth = NULL;
+static jclass LDKMessageSendEvent_SendFundingLocked_class = NULL;
+static jmethodID LDKMessageSendEvent_SendFundingLocked_meth = NULL;
+static jclass LDKMessageSendEvent_SendAnnouncementSignatures_class = NULL;
+static jmethodID LDKMessageSendEvent_SendAnnouncementSignatures_meth = NULL;
+static jclass LDKMessageSendEvent_UpdateHTLCs_class = NULL;
+static jmethodID LDKMessageSendEvent_UpdateHTLCs_meth = NULL;
+static jclass LDKMessageSendEvent_SendRevokeAndACK_class = NULL;
+static jmethodID LDKMessageSendEvent_SendRevokeAndACK_meth = NULL;
+static jclass LDKMessageSendEvent_SendClosingSigned_class = NULL;
+static jmethodID LDKMessageSendEvent_SendClosingSigned_meth = NULL;
+static jclass LDKMessageSendEvent_SendShutdown_class = NULL;
+static jmethodID LDKMessageSendEvent_SendShutdown_meth = NULL;
+static jclass LDKMessageSendEvent_SendChannelReestablish_class = NULL;
+static jmethodID LDKMessageSendEvent_SendChannelReestablish_meth = NULL;
+static jclass LDKMessageSendEvent_BroadcastChannelAnnouncement_class = NULL;
+static jmethodID LDKMessageSendEvent_BroadcastChannelAnnouncement_meth = NULL;
+static jclass LDKMessageSendEvent_BroadcastNodeAnnouncement_class = NULL;
+static jmethodID LDKMessageSendEvent_BroadcastNodeAnnouncement_meth = NULL;
+static jclass LDKMessageSendEvent_BroadcastChannelUpdate_class = NULL;
+static jmethodID LDKMessageSendEvent_BroadcastChannelUpdate_meth = NULL;
+static jclass LDKMessageSendEvent_HandleError_class = NULL;
+static jmethodID LDKMessageSendEvent_HandleError_meth = NULL;
+static jclass LDKMessageSendEvent_PaymentFailureNetworkUpdate_class = NULL;
+static jmethodID LDKMessageSendEvent_PaymentFailureNetworkUpdate_meth = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024LDKMessageSendEvent_init (JNIEnv * env, jclass _a) {
+       LDKMessageSendEvent_SendAcceptChannel_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendAcceptChannel;"));
+       CHECK(LDKMessageSendEvent_SendAcceptChannel_class != NULL);
+       LDKMessageSendEvent_SendAcceptChannel_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendAcceptChannel_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendAcceptChannel_meth != NULL);
+       LDKMessageSendEvent_SendOpenChannel_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendOpenChannel;"));
+       CHECK(LDKMessageSendEvent_SendOpenChannel_class != NULL);
+       LDKMessageSendEvent_SendOpenChannel_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendOpenChannel_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendOpenChannel_meth != NULL);
+       LDKMessageSendEvent_SendFundingCreated_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendFundingCreated;"));
+       CHECK(LDKMessageSendEvent_SendFundingCreated_class != NULL);
+       LDKMessageSendEvent_SendFundingCreated_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendFundingCreated_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendFundingCreated_meth != NULL);
+       LDKMessageSendEvent_SendFundingSigned_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendFundingSigned;"));
+       CHECK(LDKMessageSendEvent_SendFundingSigned_class != NULL);
+       LDKMessageSendEvent_SendFundingSigned_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendFundingSigned_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendFundingSigned_meth != NULL);
+       LDKMessageSendEvent_SendFundingLocked_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendFundingLocked;"));
+       CHECK(LDKMessageSendEvent_SendFundingLocked_class != NULL);
+       LDKMessageSendEvent_SendFundingLocked_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendFundingLocked_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendFundingLocked_meth != NULL);
+       LDKMessageSendEvent_SendAnnouncementSignatures_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendAnnouncementSignatures;"));
+       CHECK(LDKMessageSendEvent_SendAnnouncementSignatures_class != NULL);
+       LDKMessageSendEvent_SendAnnouncementSignatures_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendAnnouncementSignatures_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendAnnouncementSignatures_meth != NULL);
+       LDKMessageSendEvent_UpdateHTLCs_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$UpdateHTLCs;"));
+       CHECK(LDKMessageSendEvent_UpdateHTLCs_class != NULL);
+       LDKMessageSendEvent_UpdateHTLCs_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_UpdateHTLCs_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_UpdateHTLCs_meth != NULL);
+       LDKMessageSendEvent_SendRevokeAndACK_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendRevokeAndACK;"));
+       CHECK(LDKMessageSendEvent_SendRevokeAndACK_class != NULL);
+       LDKMessageSendEvent_SendRevokeAndACK_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendRevokeAndACK_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendRevokeAndACK_meth != NULL);
+       LDKMessageSendEvent_SendClosingSigned_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendClosingSigned;"));
+       CHECK(LDKMessageSendEvent_SendClosingSigned_class != NULL);
+       LDKMessageSendEvent_SendClosingSigned_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendClosingSigned_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendClosingSigned_meth != NULL);
+       LDKMessageSendEvent_SendShutdown_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendShutdown;"));
+       CHECK(LDKMessageSendEvent_SendShutdown_class != NULL);
+       LDKMessageSendEvent_SendShutdown_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendShutdown_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendShutdown_meth != NULL);
+       LDKMessageSendEvent_SendChannelReestablish_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$SendChannelReestablish;"));
+       CHECK(LDKMessageSendEvent_SendChannelReestablish_class != NULL);
+       LDKMessageSendEvent_SendChannelReestablish_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_SendChannelReestablish_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_SendChannelReestablish_meth != NULL);
+       LDKMessageSendEvent_BroadcastChannelAnnouncement_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$BroadcastChannelAnnouncement;"));
+       CHECK(LDKMessageSendEvent_BroadcastChannelAnnouncement_class != NULL);
+       LDKMessageSendEvent_BroadcastChannelAnnouncement_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_BroadcastChannelAnnouncement_class, "<init>", "(JJ)V");
+       CHECK(LDKMessageSendEvent_BroadcastChannelAnnouncement_meth != NULL);
+       LDKMessageSendEvent_BroadcastNodeAnnouncement_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$BroadcastNodeAnnouncement;"));
+       CHECK(LDKMessageSendEvent_BroadcastNodeAnnouncement_class != NULL);
+       LDKMessageSendEvent_BroadcastNodeAnnouncement_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_BroadcastNodeAnnouncement_class, "<init>", "(J)V");
+       CHECK(LDKMessageSendEvent_BroadcastNodeAnnouncement_meth != NULL);
+       LDKMessageSendEvent_BroadcastChannelUpdate_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$BroadcastChannelUpdate;"));
+       CHECK(LDKMessageSendEvent_BroadcastChannelUpdate_class != NULL);
+       LDKMessageSendEvent_BroadcastChannelUpdate_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_BroadcastChannelUpdate_class, "<init>", "(J)V");
+       CHECK(LDKMessageSendEvent_BroadcastChannelUpdate_meth != NULL);
+       LDKMessageSendEvent_HandleError_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$HandleError;"));
+       CHECK(LDKMessageSendEvent_HandleError_class != NULL);
+       LDKMessageSendEvent_HandleError_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_HandleError_class, "<init>", "([BJ)V");
+       CHECK(LDKMessageSendEvent_HandleError_meth != NULL);
+       LDKMessageSendEvent_PaymentFailureNetworkUpdate_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKMessageSendEvent$PaymentFailureNetworkUpdate;"));
+       CHECK(LDKMessageSendEvent_PaymentFailureNetworkUpdate_class != NULL);
+       LDKMessageSendEvent_PaymentFailureNetworkUpdate_meth = (*env)->GetMethodID(env, LDKMessageSendEvent_PaymentFailureNetworkUpdate_class, "<init>", "(J)V");
+       CHECK(LDKMessageSendEvent_PaymentFailureNetworkUpdate_meth != NULL);
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKMessageSendEvent_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {
+       LDKMessageSendEvent *obj = (LDKMessageSendEvent*)ptr;
+       switch(obj->tag) {
+               case LDKMessageSendEvent_SendAcceptChannel: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_accept_channel.node_id.compressed_form);
+                       LDKAcceptChannel msg_var = obj->send_accept_channel.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendAcceptChannel_class, LDKMessageSendEvent_SendAcceptChannel_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendOpenChannel: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_open_channel.node_id.compressed_form);
+                       LDKOpenChannel msg_var = obj->send_open_channel.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendOpenChannel_class, LDKMessageSendEvent_SendOpenChannel_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendFundingCreated: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_funding_created.node_id.compressed_form);
+                       LDKFundingCreated msg_var = obj->send_funding_created.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendFundingCreated_class, LDKMessageSendEvent_SendFundingCreated_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendFundingSigned: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_funding_signed.node_id.compressed_form);
+                       LDKFundingSigned msg_var = obj->send_funding_signed.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendFundingSigned_class, LDKMessageSendEvent_SendFundingSigned_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendFundingLocked: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_funding_locked.node_id.compressed_form);
+                       LDKFundingLocked msg_var = obj->send_funding_locked.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendFundingLocked_class, LDKMessageSendEvent_SendFundingLocked_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendAnnouncementSignatures: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_announcement_signatures.node_id.compressed_form);
+                       LDKAnnouncementSignatures msg_var = obj->send_announcement_signatures.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendAnnouncementSignatures_class, LDKMessageSendEvent_SendAnnouncementSignatures_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_UpdateHTLCs: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->update_htl_cs.node_id.compressed_form);
+                       LDKCommitmentUpdate updates_var = obj->update_htl_cs.updates;
+                       CHECK((((long)updates_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&updates_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long updates_ref = (long)updates_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_UpdateHTLCs_class, LDKMessageSendEvent_UpdateHTLCs_meth, node_id_arr, updates_ref);
+               }
+               case LDKMessageSendEvent_SendRevokeAndACK: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_revoke_and_ack.node_id.compressed_form);
+                       LDKRevokeAndACK msg_var = obj->send_revoke_and_ack.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendRevokeAndACK_class, LDKMessageSendEvent_SendRevokeAndACK_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendClosingSigned: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_closing_signed.node_id.compressed_form);
+                       LDKClosingSigned msg_var = obj->send_closing_signed.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendClosingSigned_class, LDKMessageSendEvent_SendClosingSigned_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendShutdown: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_shutdown.node_id.compressed_form);
+                       LDKShutdown msg_var = obj->send_shutdown.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendShutdown_class, LDKMessageSendEvent_SendShutdown_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_SendChannelReestablish: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->send_channel_reestablish.node_id.compressed_form);
+                       LDKChannelReestablish msg_var = obj->send_channel_reestablish.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_SendChannelReestablish_class, LDKMessageSendEvent_SendChannelReestablish_meth, node_id_arr, msg_ref);
+               }
+               case LDKMessageSendEvent_BroadcastChannelAnnouncement: {
+                       LDKChannelAnnouncement msg_var = obj->broadcast_channel_announcement.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       LDKChannelUpdate update_msg_var = obj->broadcast_channel_announcement.update_msg;
+                       CHECK((((long)update_msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&update_msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long update_msg_ref = (long)update_msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_BroadcastChannelAnnouncement_class, LDKMessageSendEvent_BroadcastChannelAnnouncement_meth, msg_ref, update_msg_ref);
+               }
+               case LDKMessageSendEvent_BroadcastNodeAnnouncement: {
+                       LDKNodeAnnouncement msg_var = obj->broadcast_node_announcement.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_BroadcastNodeAnnouncement_class, LDKMessageSendEvent_BroadcastNodeAnnouncement_meth, msg_ref);
+               }
+               case LDKMessageSendEvent_BroadcastChannelUpdate: {
+                       LDKChannelUpdate msg_var = obj->broadcast_channel_update.msg;
+                       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+                       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+                       long msg_ref = (long)msg_var.inner & ~1;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_BroadcastChannelUpdate_class, LDKMessageSendEvent_BroadcastChannelUpdate_meth, msg_ref);
+               }
+               case LDKMessageSendEvent_HandleError: {
+                       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+                       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, obj->handle_error.node_id.compressed_form);
+                       long action_ref = (long)&obj->handle_error.action;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_HandleError_class, LDKMessageSendEvent_HandleError_meth, node_id_arr, action_ref);
+               }
+               case LDKMessageSendEvent_PaymentFailureNetworkUpdate: {
+                       long update_ref = (long)&obj->payment_failure_network_update.update;
+                       return (*_env)->NewObject(_env, LDKMessageSendEvent_PaymentFailureNetworkUpdate_class, LDKMessageSendEvent_PaymentFailureNetworkUpdate_meth, update_ref);
+               }
+               default: abort();
+       }
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1MessageSendEvent_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_MessageSendEvent *vec = (LDKCVecTempl_MessageSendEvent*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKMessageSendEvent));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1MessageSendEvent_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_MessageSendEvent *ret = MALLOC(sizeof(LDKCVecTempl_MessageSendEvent), "LDKCVecTempl_MessageSendEvent");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKMessageSendEvent) * ret->datalen, "LDKCVecTempl_MessageSendEvent Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKMessageSendEvent arr_elem_conv = *(LDKMessageSendEvent*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
 }
-
 typedef struct LDKMessageSendEventsProvider_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID get_and_clear_pending_msg_events_meth;
 } LDKMessageSendEventsProvider_JCalls;
 LDKCVec_MessageSendEventZ get_and_clear_pending_msg_events_jcall(const void* this_arg) {
        LDKMessageSendEventsProvider_JCalls *j_calls = (LDKMessageSendEventsProvider_JCalls*) this_arg;
-       LDKCVec_MessageSendEventZ* ret = (LDKCVec_MessageSendEventZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_and_clear_pending_msg_events_meth);
-       LDKCVec_MessageSendEventZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jlongArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_and_clear_pending_msg_events_meth);
+       LDKCVec_MessageSendEventZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKMessageSendEvent), "LDKCVec_MessageSendEventZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t s = 0; s < arg_constr.datalen; s++) {
+               long arr_conv_18 = arg_vals[s];
+               LDKMessageSendEvent arr_conv_18_conv = *(LDKMessageSendEvent*)arr_conv_18;
+               FREE((void*)arr_conv_18);
+               arg_constr.data[s] = arr_conv_18_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       return arg_constr;
 }
 static void LDKMessageSendEventsProvider_JCalls_free(void* this_arg) {
        LDKMessageSendEventsProvider_JCalls *j_calls = (LDKMessageSendEventsProvider_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -279,13 +1508,13 @@ static void* LDKMessageSendEventsProvider_JCalls_clone(const void* this_arg) {
 }
 static inline LDKMessageSendEventsProvider LDKMessageSendEventsProvider_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKMessageSendEventsProvider_JCalls *calls = MALLOC(sizeof(LDKMessageSendEventsProvider_JCalls), "LDKMessageSendEventsProvider_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->get_and_clear_pending_msg_events_meth = (*env)->GetMethodID(env, c, "get_and_clear_pending_msg_events", "()J");
-       assert(calls->get_and_clear_pending_msg_events_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->get_and_clear_pending_msg_events_meth = (*env)->GetMethodID(env, c, "get_and_clear_pending_msg_events", "()[J");
+       CHECK(calls->get_and_clear_pending_msg_events_meth != NULL);
 
        LDKMessageSendEventsProvider ret = {
                .this_arg = (void*) calls,
@@ -299,23 +1528,84 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKMessageSendEventsProvider_1
        *res_ptr = LDKMessageSendEventsProvider_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKMessageSendEventsProvider_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKMessageSendEventsProvider_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_MessageSendEventsProvider_1get_1and_1clear_1pending_1msg_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKMessageSendEventsProvider* this_arg_conv = (LDKMessageSendEventsProvider*)this_arg;
+       LDKCVec_MessageSendEventZ ret_var = (this_arg_conv->get_and_clear_pending_msg_events)(this_arg_conv->this_arg);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t s = 0; s < ret_var.datalen; s++) {
+               LDKMessageSendEvent *arr_conv_18_copy = MALLOC(sizeof(LDKMessageSendEvent), "LDKMessageSendEvent");
+               *arr_conv_18_copy = MessageSendEvent_clone(&ret_var.data[s]);
+               long arr_conv_18_ref = (long)arr_conv_18_copy;
+               ret_arr_ptr[s] = arr_conv_18_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       CVec_MessageSendEventZ_free(ret_var);
+       return ret_arr;
+}
+
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1Event_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_Event *vec = (LDKCVecTempl_Event*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKEvent));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1Event_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_Event *ret = MALLOC(sizeof(LDKCVecTempl_Event), "LDKCVecTempl_Event");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKEvent) * ret->datalen, "LDKCVecTempl_Event Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKEvent arr_elem_conv = *(LDKEvent*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
 typedef struct LDKEventsProvider_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID get_and_clear_pending_events_meth;
 } LDKEventsProvider_JCalls;
 LDKCVec_EventZ get_and_clear_pending_events_jcall(const void* this_arg) {
        LDKEventsProvider_JCalls *j_calls = (LDKEventsProvider_JCalls*) this_arg;
-       LDKCVec_EventZ* ret = (LDKCVec_EventZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_and_clear_pending_events_meth);
-       LDKCVec_EventZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jlongArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_and_clear_pending_events_meth);
+       LDKCVec_EventZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKEvent), "LDKCVec_EventZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t h = 0; h < arg_constr.datalen; h++) {
+               long arr_conv_7 = arg_vals[h];
+               LDKEvent arr_conv_7_conv = *(LDKEvent*)arr_conv_7;
+               FREE((void*)arr_conv_7);
+               arg_constr.data[h] = arr_conv_7_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       return arg_constr;
 }
 static void LDKEventsProvider_JCalls_free(void* this_arg) {
        LDKEventsProvider_JCalls *j_calls = (LDKEventsProvider_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -326,13 +1616,13 @@ static void* LDKEventsProvider_JCalls_clone(const void* this_arg) {
 }
 static inline LDKEventsProvider LDKEventsProvider_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKEventsProvider_JCalls *calls = MALLOC(sizeof(LDKEventsProvider_JCalls), "LDKEventsProvider_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->get_and_clear_pending_events_meth = (*env)->GetMethodID(env, c, "get_and_clear_pending_events", "()J");
-       assert(calls->get_and_clear_pending_events_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->get_and_clear_pending_events_meth = (*env)->GetMethodID(env, c, "get_and_clear_pending_events", "()[J");
+       CHECK(calls->get_and_clear_pending_events_meth != NULL);
 
        LDKEventsProvider ret = {
                .this_arg = (void*) calls,
@@ -346,21 +1636,48 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKEventsProvider_1new (JNIEnv
        *res_ptr = LDKEventsProvider_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKEventsProvider_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKEventsProvider_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_EventsProvider_1get_1and_1clear_1pending_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKEventsProvider* this_arg_conv = (LDKEventsProvider*)this_arg;
+       LDKCVec_EventZ ret_var = (this_arg_conv->get_and_clear_pending_events)(this_arg_conv->this_arg);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t h = 0; h < ret_var.datalen; h++) {
+               LDKEvent *arr_conv_7_copy = MALLOC(sizeof(LDKEvent), "LDKEvent");
+               *arr_conv_7_copy = Event_clone(&ret_var.data[h]);
+               long arr_conv_7_ref = (long)arr_conv_7_copy;
+               ret_arr_ptr[h] = arr_conv_7_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       CVec_EventZ_free(ret_var);
+       return ret_arr;
+}
+
 typedef struct LDKLogger_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID log_meth;
 } LDKLogger_JCalls;
 void log_jcall(const void* this_arg, const char *record) {
        LDKLogger_JCalls *j_calls = (LDKLogger_JCalls*) this_arg;
-       jstring record_conv = (*j_calls->env)->NewStringUTF(j_calls->env, record);
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->log_meth, record_conv);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jstring record_conv = (*_env)->NewStringUTF(_env, record);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->log_meth, record_conv);
 }
 static void LDKLogger_JCalls_free(void* this_arg) {
        LDKLogger_JCalls *j_calls = (LDKLogger_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -371,13 +1688,13 @@ static void* LDKLogger_JCalls_clone(const void* this_arg) {
 }
 static inline LDKLogger LDKLogger_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKLogger_JCalls *calls = MALLOC(sizeof(LDKLogger_JCalls), "LDKLogger_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
        calls->log_meth = (*env)->GetMethodID(env, c, "log", "(Ljava/lang/String;)V");
-       assert(calls->log_meth != NULL);
+       CHECK(calls->log_meth != NULL);
 
        LDKLogger ret = {
                .this_arg = (void*) calls,
@@ -391,25 +1708,51 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKLogger_1new (JNIEnv * env,
        *res_ptr = LDKLogger_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKLogger_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKLogger_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1TxOutAccessErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_TxOutAccessErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1TxOutAccessErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_TxOutAccessErrorZ *val = (LDKCResult_TxOutAccessErrorZ*)arg;
+       CHECK(val->result_ok);
+       long res_ref = (long)&(*val->contents.result);
+       return res_ref;
+}
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_LDKCResult_1TxOutAccessErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_TxOutAccessErrorZ *val = (LDKCResult_TxOutAccessErrorZ*)arg;
+       CHECK(!val->result_ok);
+       jclass err_conv = LDKAccessError_to_java(_env, (*val->contents.err));
+       return err_conv;
+}
 typedef struct LDKAccess_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID get_utxo_meth;
 } LDKAccess_JCalls;
 LDKCResult_TxOutAccessErrorZ get_utxo_jcall(const void* this_arg, const uint8_t (*genesis_hash)[32], uint64_t short_channel_id) {
        LDKAccess_JCalls *j_calls = (LDKAccess_JCalls*) this_arg;
-       jbyteArray genesis_hash_arr = (*j_calls->env)->NewByteArray(j_calls->env, 32);
-       (*j_calls->env)->SetByteArrayRegion(j_calls->env, genesis_hash_arr, 0, 32, *genesis_hash);
-       LDKCResult_TxOutAccessErrorZ* ret = (LDKCResult_TxOutAccessErrorZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_utxo_meth, genesis_hash_arr, short_channel_id);
-       LDKCResult_TxOutAccessErrorZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray genesis_hash_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, genesis_hash_arr, 0, 32, *genesis_hash);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_TxOutAccessErrorZ* ret = (LDKCResult_TxOutAccessErrorZ*)(*_env)->CallLongMethod(_env, obj, j_calls->get_utxo_meth, genesis_hash_arr, short_channel_id);
+       LDKCResult_TxOutAccessErrorZ ret_conv = *(LDKCResult_TxOutAccessErrorZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 static void LDKAccess_JCalls_free(void* this_arg) {
        LDKAccess_JCalls *j_calls = (LDKAccess_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -420,13 +1763,13 @@ static void* LDKAccess_JCalls_clone(const void* this_arg) {
 }
 static inline LDKAccess LDKAccess_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKAccess_JCalls *calls = MALLOC(sizeof(LDKAccess_JCalls), "LDKAccess_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
        calls->get_utxo_meth = (*env)->GetMethodID(env, c, "get_utxo", "([BJ)J");
-       assert(calls->get_utxo_meth != NULL);
+       CHECK(calls->get_utxo_meth != NULL);
 
        LDKAccess ret = {
                .this_arg = (void*) calls,
@@ -440,10 +1783,58 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKAccess_1new (JNIEnv * env,
        *res_ptr = LDKAccess_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKAccess_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKAccess_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Access_1get_1utxo(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray genesis_hash, jlong short_channel_id) {
+       LDKAccess* this_arg_conv = (LDKAccess*)this_arg;
+       unsigned char genesis_hash_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, genesis_hash) == 32);
+       (*_env)->GetByteArrayRegion (_env, genesis_hash, 0, 32, genesis_hash_arr);
+       unsigned char (*genesis_hash_ref)[32] = &genesis_hash_arr;
+       LDKCResult_TxOutAccessErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_TxOutAccessErrorZ), "LDKCResult_TxOutAccessErrorZ");
+       *ret_conv = (this_arg_conv->get_utxo)(this_arg_conv->this_arg, genesis_hash_ref, short_channel_id);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1HTLCOutputInCommitment_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_HTLCOutputInCommitment *vec = (LDKCVecTempl_HTLCOutputInCommitment*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1HTLCOutputInCommitment_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_HTLCOutputInCommitment *ret = MALLOC(sizeof(LDKCVecTempl_HTLCOutputInCommitment), "LDKCVecTempl_HTLCOutputInCommitment");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKHTLCOutputInCommitment) * ret->datalen, "LDKCVecTempl_HTLCOutputInCommitment Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKHTLCOutputInCommitment arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = HTLCOutputInCommitment_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
 typedef struct LDKChannelKeys_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID get_per_commitment_point_meth;
        jmethodID release_commitment_secret_meth;
        jmethodID key_derivation_params_meth;
@@ -458,84 +1849,203 @@ typedef struct LDKChannelKeys_JCalls {
 } LDKChannelKeys_JCalls;
 LDKPublicKey get_per_commitment_point_jcall(const void* this_arg, uint64_t idx) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKPublicKey* ret = (LDKPublicKey*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_per_commitment_point_meth, idx);
-       LDKPublicKey res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jbyteArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_per_commitment_point_meth, idx);
+       LDKPublicKey arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 33, arg_ref.compressed_form);
+       return arg_ref;
 }
 LDKThirtyTwoBytes release_commitment_secret_jcall(const void* this_arg, uint64_t idx) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKThirtyTwoBytes* ret = (LDKThirtyTwoBytes*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->release_commitment_secret_meth, idx);
-       LDKThirtyTwoBytes res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jbyteArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->release_commitment_secret_meth, idx);
+       LDKThirtyTwoBytes arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 32, arg_ref.data);
+       return arg_ref;
 }
 LDKC2Tuple_u64u64Z key_derivation_params_jcall(const void* this_arg) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKC2Tuple_u64u64Z* ret = (LDKC2Tuple_u64u64Z*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->key_derivation_params_meth);
-       LDKC2Tuple_u64u64Z res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKC2Tuple_u64u64Z* ret = (LDKC2Tuple_u64u64Z*)(*_env)->CallLongMethod(_env, obj, j_calls->key_derivation_params_meth);
+       LDKC2Tuple_u64u64Z ret_conv = *(LDKC2Tuple_u64u64Z*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment_jcall(const void* this_arg, uint32_t feerate_per_kw, LDKTransaction commitment_tx, const LDKPreCalculatedTxCreationKeys *keys, LDKCVec_HTLCOutputInCommitmentZ htlcs) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ* ret = (LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->sign_counterparty_commitment_meth, feerate_per_kw, commitment_tx, keys, htlcs);
-       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKTransaction *commitment_tx_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *commitment_tx_copy = commitment_tx;
+       long commitment_tx_ref = (long)commitment_tx_copy;
+       LDKPreCalculatedTxCreationKeys keys_var = *keys;
+       if (keys->inner != NULL)
+               keys_var = PreCalculatedTxCreationKeys_clone(keys);
+       CHECK((((long)keys_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&keys_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long keys_ref = (long)keys_var.inner & ~1;
+       LDKCVec_HTLCOutputInCommitmentZ htlcs_var = htlcs;
+       jlongArray htlcs_arr = (*_env)->NewLongArray(_env, htlcs_var.datalen);
+       jlong *htlcs_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, htlcs_arr, NULL);
+       for (size_t y = 0; y < htlcs_var.datalen; y++) {
+               LDKHTLCOutputInCommitment arr_conv_24_var = htlcs_var.data[y];
+               CHECK((((long)arr_conv_24_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+               CHECK((((long)&arr_conv_24_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+               long arr_conv_24_ref = (long)arr_conv_24_var.inner;
+               if (arr_conv_24_var.is_owned) {
+                       arr_conv_24_ref |= 1;
+               }
+               htlcs_arr_ptr[y] = arr_conv_24_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, htlcs_arr, htlcs_arr_ptr, 0);
+       FREE(htlcs_var.data);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ* ret = (LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ*)(*_env)->CallLongMethod(_env, obj, j_calls->sign_counterparty_commitment_meth, feerate_per_kw, commitment_tx_ref, keys_ref, htlcs_arr);
+       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ ret_conv = *(LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_SignatureNoneZ sign_holder_commitment_jcall(const void* this_arg, const LDKHolderCommitmentTransaction *holder_commitment_tx) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->sign_holder_commitment_meth, holder_commitment_tx);
-       LDKCResult_SignatureNoneZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKHolderCommitmentTransaction holder_commitment_tx_var = *holder_commitment_tx;
+       if (holder_commitment_tx->inner != NULL)
+               holder_commitment_tx_var = HolderCommitmentTransaction_clone(holder_commitment_tx);
+       CHECK((((long)holder_commitment_tx_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&holder_commitment_tx_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long holder_commitment_tx_ref = (long)holder_commitment_tx_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*_env)->CallLongMethod(_env, obj, j_calls->sign_holder_commitment_meth, holder_commitment_tx_ref);
+       LDKCResult_SignatureNoneZ ret_conv = *(LDKCResult_SignatureNoneZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_CVec_SignatureZNoneZ sign_holder_commitment_htlc_transactions_jcall(const void* this_arg, const LDKHolderCommitmentTransaction *holder_commitment_tx) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKCResult_CVec_SignatureZNoneZ* ret = (LDKCResult_CVec_SignatureZNoneZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->sign_holder_commitment_htlc_transactions_meth, holder_commitment_tx);
-       LDKCResult_CVec_SignatureZNoneZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKHolderCommitmentTransaction holder_commitment_tx_var = *holder_commitment_tx;
+       if (holder_commitment_tx->inner != NULL)
+               holder_commitment_tx_var = HolderCommitmentTransaction_clone(holder_commitment_tx);
+       CHECK((((long)holder_commitment_tx_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&holder_commitment_tx_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long holder_commitment_tx_ref = (long)holder_commitment_tx_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_CVec_SignatureZNoneZ* ret = (LDKCResult_CVec_SignatureZNoneZ*)(*_env)->CallLongMethod(_env, obj, j_calls->sign_holder_commitment_htlc_transactions_meth, holder_commitment_tx_ref);
+       LDKCResult_CVec_SignatureZNoneZ ret_conv = *(LDKCResult_CVec_SignatureZNoneZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_SignatureNoneZ sign_justice_transaction_jcall(const void* this_arg, LDKTransaction justice_tx, uintptr_t input, uint64_t amount, const uint8_t (*per_commitment_key)[32], const LDKHTLCOutputInCommitment *htlc) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       jbyteArray per_commitment_key_arr = (*j_calls->env)->NewByteArray(j_calls->env, 32);
-       (*j_calls->env)->SetByteArrayRegion(j_calls->env, per_commitment_key_arr, 0, 32, *per_commitment_key);
-       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->sign_justice_transaction_meth, justice_tx, input, amount, per_commitment_key_arr, htlc);
-       LDKCResult_SignatureNoneZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKTransaction *justice_tx_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *justice_tx_copy = justice_tx;
+       long justice_tx_ref = (long)justice_tx_copy;
+       jbyteArray per_commitment_key_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, per_commitment_key_arr, 0, 32, *per_commitment_key);
+       LDKHTLCOutputInCommitment htlc_var = *htlc;
+       if (htlc->inner != NULL)
+               htlc_var = HTLCOutputInCommitment_clone(htlc);
+       CHECK((((long)htlc_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&htlc_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long htlc_ref = (long)htlc_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*_env)->CallLongMethod(_env, obj, j_calls->sign_justice_transaction_meth, justice_tx_ref, input, amount, per_commitment_key_arr, htlc_ref);
+       LDKCResult_SignatureNoneZ ret_conv = *(LDKCResult_SignatureNoneZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_SignatureNoneZ sign_counterparty_htlc_transaction_jcall(const void* this_arg, LDKTransaction htlc_tx, uintptr_t input, uint64_t amount, LDKPublicKey per_commitment_point, const LDKHTLCOutputInCommitment *htlc) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->sign_counterparty_htlc_transaction_meth, htlc_tx, input, amount, per_commitment_point, htlc);
-       LDKCResult_SignatureNoneZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKTransaction *htlc_tx_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *htlc_tx_copy = htlc_tx;
+       long htlc_tx_ref = (long)htlc_tx_copy;
+       jbyteArray per_commitment_point_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, per_commitment_point_arr, 0, 33, per_commitment_point.compressed_form);
+       LDKHTLCOutputInCommitment htlc_var = *htlc;
+       if (htlc->inner != NULL)
+               htlc_var = HTLCOutputInCommitment_clone(htlc);
+       CHECK((((long)htlc_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&htlc_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long htlc_ref = (long)htlc_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*_env)->CallLongMethod(_env, obj, j_calls->sign_counterparty_htlc_transaction_meth, htlc_tx_ref, input, amount, per_commitment_point_arr, htlc_ref);
+       LDKCResult_SignatureNoneZ ret_conv = *(LDKCResult_SignatureNoneZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_SignatureNoneZ sign_closing_transaction_jcall(const void* this_arg, LDKTransaction closing_tx) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->sign_closing_transaction_meth, closing_tx);
-       LDKCResult_SignatureNoneZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKTransaction *closing_tx_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *closing_tx_copy = closing_tx;
+       long closing_tx_ref = (long)closing_tx_copy;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*_env)->CallLongMethod(_env, obj, j_calls->sign_closing_transaction_meth, closing_tx_ref);
+       LDKCResult_SignatureNoneZ ret_conv = *(LDKCResult_SignatureNoneZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_SignatureNoneZ sign_channel_announcement_jcall(const void* this_arg, const LDKUnsignedChannelAnnouncement *msg) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->sign_channel_announcement_meth, msg);
-       LDKCResult_SignatureNoneZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKUnsignedChannelAnnouncement msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = UnsignedChannelAnnouncement_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_SignatureNoneZ* ret = (LDKCResult_SignatureNoneZ*)(*_env)->CallLongMethod(_env, obj, j_calls->sign_channel_announcement_meth, msg_ref);
+       LDKCResult_SignatureNoneZ ret_conv = *(LDKCResult_SignatureNoneZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 void on_accept_jcall(void* this_arg, const LDKChannelPublicKeys *channel_points, uint16_t counterparty_selected_contest_delay, uint16_t holder_selected_contest_delay) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->on_accept_meth, channel_points, counterparty_selected_contest_delay, holder_selected_contest_delay);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKChannelPublicKeys channel_points_var = *channel_points;
+       if (channel_points->inner != NULL)
+               channel_points_var = ChannelPublicKeys_clone(channel_points);
+       CHECK((((long)channel_points_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&channel_points_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long channel_points_ref = (long)channel_points_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->on_accept_meth, channel_points_ref, counterparty_selected_contest_delay, holder_selected_contest_delay);
 }
 static void LDKChannelKeys_JCalls_free(void* this_arg) {
        LDKChannelKeys_JCalls *j_calls = (LDKChannelKeys_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -544,35 +2054,41 @@ static void* LDKChannelKeys_JCalls_clone(const void* this_arg) {
        atomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);
        return (void*) this_arg;
 }
-static inline LDKChannelKeys LDKChannelKeys_init (JNIEnv * env, jclass _a, jobject o) {
+static inline LDKChannelKeys LDKChannelKeys_init (JNIEnv * env, jclass _a, jobject o, jlong pubkeys) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKChannelKeys_JCalls *calls = MALLOC(sizeof(LDKChannelKeys_JCalls), "LDKChannelKeys_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->get_per_commitment_point_meth = (*env)->GetMethodID(env, c, "get_per_commitment_point", "(J)J");
-       assert(calls->get_per_commitment_point_meth != NULL);
-       calls->release_commitment_secret_meth = (*env)->GetMethodID(env, c, "release_commitment_secret", "(J)J");
-       assert(calls->release_commitment_secret_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->get_per_commitment_point_meth = (*env)->GetMethodID(env, c, "get_per_commitment_point", "(J)[B");
+       CHECK(calls->get_per_commitment_point_meth != NULL);
+       calls->release_commitment_secret_meth = (*env)->GetMethodID(env, c, "release_commitment_secret", "(J)[B");
+       CHECK(calls->release_commitment_secret_meth != NULL);
        calls->key_derivation_params_meth = (*env)->GetMethodID(env, c, "key_derivation_params", "()J");
-       assert(calls->key_derivation_params_meth != NULL);
-       calls->sign_counterparty_commitment_meth = (*env)->GetMethodID(env, c, "sign_counterparty_commitment", "(IJJJ)J");
-       assert(calls->sign_counterparty_commitment_meth != NULL);
+       CHECK(calls->key_derivation_params_meth != NULL);
+       calls->sign_counterparty_commitment_meth = (*env)->GetMethodID(env, c, "sign_counterparty_commitment", "(IJJ[J)J");
+       CHECK(calls->sign_counterparty_commitment_meth != NULL);
        calls->sign_holder_commitment_meth = (*env)->GetMethodID(env, c, "sign_holder_commitment", "(J)J");
-       assert(calls->sign_holder_commitment_meth != NULL);
+       CHECK(calls->sign_holder_commitment_meth != NULL);
        calls->sign_holder_commitment_htlc_transactions_meth = (*env)->GetMethodID(env, c, "sign_holder_commitment_htlc_transactions", "(J)J");
-       assert(calls->sign_holder_commitment_htlc_transactions_meth != NULL);
+       CHECK(calls->sign_holder_commitment_htlc_transactions_meth != NULL);
        calls->sign_justice_transaction_meth = (*env)->GetMethodID(env, c, "sign_justice_transaction", "(JJJ[BJ)J");
-       assert(calls->sign_justice_transaction_meth != NULL);
-       calls->sign_counterparty_htlc_transaction_meth = (*env)->GetMethodID(env, c, "sign_counterparty_htlc_transaction", "(JJJJJ)J");
-       assert(calls->sign_counterparty_htlc_transaction_meth != NULL);
+       CHECK(calls->sign_justice_transaction_meth != NULL);
+       calls->sign_counterparty_htlc_transaction_meth = (*env)->GetMethodID(env, c, "sign_counterparty_htlc_transaction", "(JJJ[BJ)J");
+       CHECK(calls->sign_counterparty_htlc_transaction_meth != NULL);
        calls->sign_closing_transaction_meth = (*env)->GetMethodID(env, c, "sign_closing_transaction", "(J)J");
-       assert(calls->sign_closing_transaction_meth != NULL);
+       CHECK(calls->sign_closing_transaction_meth != NULL);
        calls->sign_channel_announcement_meth = (*env)->GetMethodID(env, c, "sign_channel_announcement", "(J)J");
-       assert(calls->sign_channel_announcement_meth != NULL);
+       CHECK(calls->sign_channel_announcement_meth != NULL);
        calls->on_accept_meth = (*env)->GetMethodID(env, c, "on_accept", "(JSS)V");
-       assert(calls->on_accept_meth != NULL);
+       CHECK(calls->on_accept_meth != NULL);
+
+       LDKChannelPublicKeys pubkeys_conv;
+       pubkeys_conv.inner = (void*)(pubkeys & (~1));
+       pubkeys_conv.is_owned = (pubkeys & 1) || (pubkeys == 0);
+       if (pubkeys_conv.inner != NULL)
+               pubkeys_conv = ChannelPublicKeys_clone(&pubkeys_conv);
 
        LDKChannelKeys ret = {
                .this_arg = (void*) calls,
@@ -589,47 +2105,284 @@ static inline LDKChannelKeys LDKChannelKeys_init (JNIEnv * env, jclass _a, jobje
                .on_accept = on_accept_jcall,
                .clone = LDKChannelKeys_JCalls_clone,
                .free = LDKChannelKeys_JCalls_free,
+               .pubkeys = pubkeys_conv,
+               .set_pubkeys = NULL,
        };
        return ret;
 }
-JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKChannelKeys_1new (JNIEnv * env, jclass _a, jobject o) {
+JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKChannelKeys_1new (JNIEnv * env, jclass _a, jobject o, jlong pubkeys) {
        LDKChannelKeys *res_ptr = MALLOC(sizeof(LDKChannelKeys), "LDKChannelKeys");
-       *res_ptr = LDKChannelKeys_init(env, _a, o);
+       *res_ptr = LDKChannelKeys_init(env, _a, o, pubkeys);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKChannelKeys_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKChannelKeys_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1get_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_arg, jlong idx) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, (this_arg_conv->get_per_commitment_point)(this_arg_conv->this_arg, idx).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1release_1commitment_1secret(JNIEnv * _env, jclass _b, jlong this_arg, jlong idx) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 32, (this_arg_conv->release_commitment_secret)(this_arg_conv->this_arg, idx).data);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1key_1derivation_1params(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKC2Tuple_u64u64Z* ret_ref = MALLOC(sizeof(LDKC2Tuple_u64u64Z), "LDKC2Tuple_u64u64Z");
+       *ret_ref = (this_arg_conv->key_derivation_params)(this_arg_conv->this_arg);
+       return (long)ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1sign_1counterparty_1commitment(JNIEnv * _env, jclass _b, jlong this_arg, jint feerate_per_kw, jlong commitment_tx, jlong keys, jlongArray htlcs) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKTransaction commitment_tx_conv = *(LDKTransaction*)commitment_tx;
+       LDKPreCalculatedTxCreationKeys keys_conv;
+       keys_conv.inner = (void*)(keys & (~1));
+       keys_conv.is_owned = (keys & 1) || (keys == 0);
+       LDKCVec_HTLCOutputInCommitmentZ htlcs_constr;
+       htlcs_constr.datalen = (*_env)->GetArrayLength (_env, htlcs);
+       if (htlcs_constr.datalen > 0)
+               htlcs_constr.data = MALLOC(htlcs_constr.datalen * sizeof(LDKHTLCOutputInCommitment), "LDKCVec_HTLCOutputInCommitmentZ Elements");
+       else
+               htlcs_constr.data = NULL;
+       long* htlcs_vals = (*_env)->GetLongArrayElements (_env, htlcs, NULL);
+       for (size_t y = 0; y < htlcs_constr.datalen; y++) {
+               long arr_conv_24 = htlcs_vals[y];
+               LDKHTLCOutputInCommitment arr_conv_24_conv;
+               arr_conv_24_conv.inner = (void*)(arr_conv_24 & (~1));
+               arr_conv_24_conv.is_owned = (arr_conv_24 & 1) || (arr_conv_24 == 0);
+               if (arr_conv_24_conv.inner != NULL)
+                       arr_conv_24_conv = HTLCOutputInCommitment_clone(&arr_conv_24_conv);
+               htlcs_constr.data[y] = arr_conv_24_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, htlcs, htlcs_vals, 0);
+       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ), "LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ");
+       *ret_conv = (this_arg_conv->sign_counterparty_commitment)(this_arg_conv->this_arg, feerate_per_kw, commitment_tx_conv, &keys_conv, htlcs_constr);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1sign_1holder_1commitment(JNIEnv * _env, jclass _b, jlong this_arg, jlong holder_commitment_tx) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKHolderCommitmentTransaction holder_commitment_tx_conv;
+       holder_commitment_tx_conv.inner = (void*)(holder_commitment_tx & (~1));
+       holder_commitment_tx_conv.is_owned = (holder_commitment_tx & 1) || (holder_commitment_tx == 0);
+       LDKCResult_SignatureNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
+       *ret_conv = (this_arg_conv->sign_holder_commitment)(this_arg_conv->this_arg, &holder_commitment_tx_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1sign_1holder_1commitment_1htlc_1transactions(JNIEnv * _env, jclass _b, jlong this_arg, jlong holder_commitment_tx) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKHolderCommitmentTransaction holder_commitment_tx_conv;
+       holder_commitment_tx_conv.inner = (void*)(holder_commitment_tx & (~1));
+       holder_commitment_tx_conv.is_owned = (holder_commitment_tx & 1) || (holder_commitment_tx == 0);
+       LDKCResult_CVec_SignatureZNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_CVec_SignatureZNoneZ), "LDKCResult_CVec_SignatureZNoneZ");
+       *ret_conv = (this_arg_conv->sign_holder_commitment_htlc_transactions)(this_arg_conv->this_arg, &holder_commitment_tx_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1sign_1justice_1transaction(JNIEnv * _env, jclass _b, jlong this_arg, jlong justice_tx, jlong input, jlong amount, jbyteArray per_commitment_key, jlong htlc) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKTransaction justice_tx_conv = *(LDKTransaction*)justice_tx;
+       unsigned char per_commitment_key_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_key) == 32);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_key, 0, 32, per_commitment_key_arr);
+       unsigned char (*per_commitment_key_ref)[32] = &per_commitment_key_arr;
+       LDKHTLCOutputInCommitment htlc_conv;
+       htlc_conv.inner = (void*)(htlc & (~1));
+       htlc_conv.is_owned = (htlc & 1) || (htlc == 0);
+       LDKCResult_SignatureNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
+       *ret_conv = (this_arg_conv->sign_justice_transaction)(this_arg_conv->this_arg, justice_tx_conv, input, amount, per_commitment_key_ref, &htlc_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1sign_1counterparty_1htlc_1transaction(JNIEnv * _env, jclass _b, jlong this_arg, jlong htlc_tx, jlong input, jlong amount, jbyteArray per_commitment_point, jlong htlc) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKTransaction htlc_tx_conv = *(LDKTransaction*)htlc_tx;
+       LDKPublicKey per_commitment_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_point, 0, 33, per_commitment_point_ref.compressed_form);
+       LDKHTLCOutputInCommitment htlc_conv;
+       htlc_conv.inner = (void*)(htlc & (~1));
+       htlc_conv.is_owned = (htlc & 1) || (htlc == 0);
+       LDKCResult_SignatureNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
+       *ret_conv = (this_arg_conv->sign_counterparty_htlc_transaction)(this_arg_conv->this_arg, htlc_tx_conv, input, amount, per_commitment_point_ref, &htlc_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1sign_1closing_1transaction(JNIEnv * _env, jclass _b, jlong this_arg, jlong closing_tx) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKTransaction closing_tx_conv = *(LDKTransaction*)closing_tx;
+       LDKCResult_SignatureNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
+       *ret_conv = (this_arg_conv->sign_closing_transaction)(this_arg_conv->this_arg, closing_tx_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1sign_1channel_1announcement(JNIEnv * _env, jclass _b, jlong this_arg, jlong msg) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKUnsignedChannelAnnouncement msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       LDKCResult_SignatureNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
+       *ret_conv = (this_arg_conv->sign_channel_announcement)(this_arg_conv->this_arg, &msg_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1on_1accept(JNIEnv * _env, jclass _b, jlong this_arg, jlong channel_points, jshort counterparty_selected_contest_delay, jshort holder_selected_contest_delay) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKChannelPublicKeys channel_points_conv;
+       channel_points_conv.inner = (void*)(channel_points & (~1));
+       channel_points_conv.is_owned = (channel_points & 1) || (channel_points == 0);
+       (this_arg_conv->on_accept)(this_arg_conv->this_arg, &channel_points_conv, counterparty_selected_contest_delay, holder_selected_contest_delay);
+}
+
+LDKChannelPublicKeys LDKChannelKeys_set_get_pubkeys(LDKChannelKeys* this_arg) {
+       if (this_arg->set_pubkeys != NULL)
+               this_arg->set_pubkeys(this_arg);
+       return this_arg->pubkeys;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1get_1pubkeys(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKChannelKeys* this_arg_conv = (LDKChannelKeys*)this_arg;
+       LDKChannelPublicKeys ret_var = LDKChannelKeys_set_get_pubkeys(this_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1MonitorEvent_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_MonitorEvent *vec = (LDKCVecTempl_MonitorEvent*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1MonitorEvent_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_MonitorEvent *ret = MALLOC(sizeof(LDKCVecTempl_MonitorEvent), "LDKCVecTempl_MonitorEvent");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKMonitorEvent) * ret->datalen, "LDKCVecTempl_MonitorEvent Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKMonitorEvent arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = MonitorEvent_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
 typedef struct LDKWatch_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID watch_channel_meth;
        jmethodID update_channel_meth;
        jmethodID release_pending_monitor_events_meth;
 } LDKWatch_JCalls;
 LDKCResult_NoneChannelMonitorUpdateErrZ watch_channel_jcall(const void* this_arg, LDKOutPoint funding_txo, LDKChannelMonitor monitor) {
        LDKWatch_JCalls *j_calls = (LDKWatch_JCalls*) this_arg;
-       LDKCResult_NoneChannelMonitorUpdateErrZ* ret = (LDKCResult_NoneChannelMonitorUpdateErrZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->watch_channel_meth, funding_txo, monitor);
-       LDKCResult_NoneChannelMonitorUpdateErrZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKOutPoint funding_txo_var = funding_txo;
+       CHECK((((long)funding_txo_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&funding_txo_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long funding_txo_ref = (long)funding_txo_var.inner;
+       if (funding_txo_var.is_owned) {
+               funding_txo_ref |= 1;
+       }
+       LDKChannelMonitor monitor_var = monitor;
+       CHECK((((long)monitor_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&monitor_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long monitor_ref = (long)monitor_var.inner;
+       if (monitor_var.is_owned) {
+               monitor_ref |= 1;
+       }
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_NoneChannelMonitorUpdateErrZ* ret = (LDKCResult_NoneChannelMonitorUpdateErrZ*)(*_env)->CallLongMethod(_env, obj, j_calls->watch_channel_meth, funding_txo_ref, monitor_ref);
+       LDKCResult_NoneChannelMonitorUpdateErrZ ret_conv = *(LDKCResult_NoneChannelMonitorUpdateErrZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_NoneChannelMonitorUpdateErrZ update_channel_jcall(const void* this_arg, LDKOutPoint funding_txo, LDKChannelMonitorUpdate update) {
        LDKWatch_JCalls *j_calls = (LDKWatch_JCalls*) this_arg;
-       LDKCResult_NoneChannelMonitorUpdateErrZ* ret = (LDKCResult_NoneChannelMonitorUpdateErrZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->update_channel_meth, funding_txo, update);
-       LDKCResult_NoneChannelMonitorUpdateErrZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKOutPoint funding_txo_var = funding_txo;
+       CHECK((((long)funding_txo_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&funding_txo_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long funding_txo_ref = (long)funding_txo_var.inner;
+       if (funding_txo_var.is_owned) {
+               funding_txo_ref |= 1;
+       }
+       LDKChannelMonitorUpdate update_var = update;
+       CHECK((((long)update_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&update_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long update_ref = (long)update_var.inner;
+       if (update_var.is_owned) {
+               update_ref |= 1;
+       }
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_NoneChannelMonitorUpdateErrZ* ret = (LDKCResult_NoneChannelMonitorUpdateErrZ*)(*_env)->CallLongMethod(_env, obj, j_calls->update_channel_meth, funding_txo_ref, update_ref);
+       LDKCResult_NoneChannelMonitorUpdateErrZ ret_conv = *(LDKCResult_NoneChannelMonitorUpdateErrZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCVec_MonitorEventZ release_pending_monitor_events_jcall(const void* this_arg) {
        LDKWatch_JCalls *j_calls = (LDKWatch_JCalls*) this_arg;
-       LDKCVec_MonitorEventZ* ret = (LDKCVec_MonitorEventZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->release_pending_monitor_events_meth);
-       LDKCVec_MonitorEventZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jlongArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->release_pending_monitor_events_meth);
+       LDKCVec_MonitorEventZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKMonitorEvent), "LDKCVec_MonitorEventZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t o = 0; o < arg_constr.datalen; o++) {
+               long arr_conv_14 = arg_vals[o];
+               LDKMonitorEvent arr_conv_14_conv;
+               arr_conv_14_conv.inner = (void*)(arr_conv_14 & (~1));
+               arr_conv_14_conv.is_owned = (arr_conv_14 & 1) || (arr_conv_14 == 0);
+               if (arr_conv_14_conv.inner != NULL)
+                       arr_conv_14_conv = MonitorEvent_clone(&arr_conv_14_conv);
+               arg_constr.data[o] = arr_conv_14_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       return arg_constr;
 }
 static void LDKWatch_JCalls_free(void* this_arg) {
        LDKWatch_JCalls *j_calls = (LDKWatch_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -640,17 +2393,17 @@ static void* LDKWatch_JCalls_clone(const void* this_arg) {
 }
 static inline LDKWatch LDKWatch_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKWatch_JCalls *calls = MALLOC(sizeof(LDKWatch_JCalls), "LDKWatch_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
        calls->watch_channel_meth = (*env)->GetMethodID(env, c, "watch_channel", "(JJ)J");
-       assert(calls->watch_channel_meth != NULL);
+       CHECK(calls->watch_channel_meth != NULL);
        calls->update_channel_meth = (*env)->GetMethodID(env, c, "update_channel", "(JJ)J");
-       assert(calls->update_channel_meth != NULL);
-       calls->release_pending_monitor_events_meth = (*env)->GetMethodID(env, c, "release_pending_monitor_events", "()J");
-       assert(calls->release_pending_monitor_events_meth != NULL);
+       CHECK(calls->update_channel_meth != NULL);
+       calls->release_pending_monitor_events_meth = (*env)->GetMethodID(env, c, "release_pending_monitor_events", "()[J");
+       CHECK(calls->release_pending_monitor_events_meth != NULL);
 
        LDKWatch ret = {
                .this_arg = (void*) calls,
@@ -666,27 +2419,107 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKWatch_1new (JNIEnv * env, j
        *res_ptr = LDKWatch_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKWatch_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKWatch_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Watch_1watch_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jlong funding_txo, jlong monitor) {
+       LDKWatch* this_arg_conv = (LDKWatch*)this_arg;
+       LDKOutPoint funding_txo_conv;
+       funding_txo_conv.inner = (void*)(funding_txo & (~1));
+       funding_txo_conv.is_owned = (funding_txo & 1) || (funding_txo == 0);
+       if (funding_txo_conv.inner != NULL)
+               funding_txo_conv = OutPoint_clone(&funding_txo_conv);
+       LDKChannelMonitor monitor_conv;
+       monitor_conv.inner = (void*)(monitor & (~1));
+       monitor_conv.is_owned = (monitor & 1) || (monitor == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKCResult_NoneChannelMonitorUpdateErrZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneChannelMonitorUpdateErrZ), "LDKCResult_NoneChannelMonitorUpdateErrZ");
+       *ret_conv = (this_arg_conv->watch_channel)(this_arg_conv->this_arg, funding_txo_conv, monitor_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Watch_1update_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jlong funding_txo, jlong update) {
+       LDKWatch* this_arg_conv = (LDKWatch*)this_arg;
+       LDKOutPoint funding_txo_conv;
+       funding_txo_conv.inner = (void*)(funding_txo & (~1));
+       funding_txo_conv.is_owned = (funding_txo & 1) || (funding_txo == 0);
+       if (funding_txo_conv.inner != NULL)
+               funding_txo_conv = OutPoint_clone(&funding_txo_conv);
+       LDKChannelMonitorUpdate update_conv;
+       update_conv.inner = (void*)(update & (~1));
+       update_conv.is_owned = (update & 1) || (update == 0);
+       if (update_conv.inner != NULL)
+               update_conv = ChannelMonitorUpdate_clone(&update_conv);
+       LDKCResult_NoneChannelMonitorUpdateErrZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneChannelMonitorUpdateErrZ), "LDKCResult_NoneChannelMonitorUpdateErrZ");
+       *ret_conv = (this_arg_conv->update_channel)(this_arg_conv->this_arg, funding_txo_conv, update_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_Watch_1release_1pending_1monitor_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKWatch* this_arg_conv = (LDKWatch*)this_arg;
+       LDKCVec_MonitorEventZ ret_var = (this_arg_conv->release_pending_monitor_events)(this_arg_conv->this_arg);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t o = 0; o < ret_var.datalen; o++) {
+               LDKMonitorEvent arr_conv_14_var = ret_var.data[o];
+               CHECK((((long)arr_conv_14_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+               CHECK((((long)&arr_conv_14_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+               long arr_conv_14_ref = (long)arr_conv_14_var.inner;
+               if (arr_conv_14_var.is_owned) {
+                       arr_conv_14_ref |= 1;
+               }
+               ret_arr_ptr[o] = arr_conv_14_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       FREE(ret_var.data);
+       return ret_arr;
+}
+
 typedef struct LDKFilter_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID register_tx_meth;
        jmethodID register_output_meth;
 } LDKFilter_JCalls;
 void register_tx_jcall(const void* this_arg, const uint8_t (*txid)[32], LDKu8slice script_pubkey) {
        LDKFilter_JCalls *j_calls = (LDKFilter_JCalls*) this_arg;
-       jbyteArray txid_arr = (*j_calls->env)->NewByteArray(j_calls->env, 32);
-       (*j_calls->env)->SetByteArrayRegion(j_calls->env, txid_arr, 0, 32, *txid);
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->register_tx_meth, txid_arr, script_pubkey);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray txid_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, txid_arr, 0, 32, *txid);
+       LDKu8slice script_pubkey_var = script_pubkey;
+       jbyteArray script_pubkey_arr = (*_env)->NewByteArray(_env, script_pubkey_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, script_pubkey_arr, 0, script_pubkey_var.datalen, script_pubkey_var.data);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->register_tx_meth, txid_arr, script_pubkey_arr);
 }
 void register_output_jcall(const void* this_arg, const LDKOutPoint *outpoint, LDKu8slice script_pubkey) {
        LDKFilter_JCalls *j_calls = (LDKFilter_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->register_output_meth, outpoint, script_pubkey);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKOutPoint outpoint_var = *outpoint;
+       if (outpoint->inner != NULL)
+               outpoint_var = OutPoint_clone(outpoint);
+       CHECK((((long)outpoint_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&outpoint_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long outpoint_ref = (long)outpoint_var.inner & ~1;
+       LDKu8slice script_pubkey_var = script_pubkey;
+       jbyteArray script_pubkey_arr = (*_env)->NewByteArray(_env, script_pubkey_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, script_pubkey_arr, 0, script_pubkey_var.datalen, script_pubkey_var.data);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->register_output_meth, outpoint_ref, script_pubkey_arr);
 }
 static void LDKFilter_JCalls_free(void* this_arg) {
        LDKFilter_JCalls *j_calls = (LDKFilter_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -697,15 +2530,15 @@ static void* LDKFilter_JCalls_clone(const void* this_arg) {
 }
 static inline LDKFilter LDKFilter_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKFilter_JCalls *calls = MALLOC(sizeof(LDKFilter_JCalls), "LDKFilter_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->register_tx_meth = (*env)->GetMethodID(env, c, "register_tx", "([BJ)V");
-       assert(calls->register_tx_meth != NULL);
-       calls->register_output_meth = (*env)->GetMethodID(env, c, "register_output", "(JJ)V");
-       assert(calls->register_output_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->register_tx_meth = (*env)->GetMethodID(env, c, "register_tx", "([B[B)V");
+       CHECK(calls->register_tx_meth != NULL);
+       calls->register_output_meth = (*env)->GetMethodID(env, c, "register_output", "(J[B)V");
+       CHECK(calls->register_output_meth != NULL);
 
        LDKFilter ret = {
                .this_arg = (void*) calls,
@@ -720,20 +2553,59 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKFilter_1new (JNIEnv * env,
        *res_ptr = LDKFilter_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKFilter_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKFilter_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Filter_1register_1tx(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray txid, jbyteArray script_pubkey) {
+       LDKFilter* this_arg_conv = (LDKFilter*)this_arg;
+       unsigned char txid_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, txid) == 32);
+       (*_env)->GetByteArrayRegion (_env, txid, 0, 32, txid_arr);
+       unsigned char (*txid_ref)[32] = &txid_arr;
+       LDKu8slice script_pubkey_ref;
+       script_pubkey_ref.data = (*_env)->GetByteArrayElements (_env, script_pubkey, NULL);
+       script_pubkey_ref.datalen = (*_env)->GetArrayLength (_env, script_pubkey);
+       (this_arg_conv->register_tx)(this_arg_conv->this_arg, txid_ref, script_pubkey_ref);
+       (*_env)->ReleaseByteArrayElements(_env, script_pubkey, (int8_t*)script_pubkey_ref.data, 0);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Filter_1register_1output(JNIEnv * _env, jclass _b, jlong this_arg, jlong outpoint, jbyteArray script_pubkey) {
+       LDKFilter* this_arg_conv = (LDKFilter*)this_arg;
+       LDKOutPoint outpoint_conv;
+       outpoint_conv.inner = (void*)(outpoint & (~1));
+       outpoint_conv.is_owned = (outpoint & 1) || (outpoint == 0);
+       LDKu8slice script_pubkey_ref;
+       script_pubkey_ref.data = (*_env)->GetByteArrayElements (_env, script_pubkey, NULL);
+       script_pubkey_ref.datalen = (*_env)->GetArrayLength (_env, script_pubkey);
+       (this_arg_conv->register_output)(this_arg_conv->this_arg, &outpoint_conv, script_pubkey_ref);
+       (*_env)->ReleaseByteArrayElements(_env, script_pubkey, (int8_t*)script_pubkey_ref.data, 0);
+}
+
 typedef struct LDKBroadcasterInterface_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID broadcast_transaction_meth;
 } LDKBroadcasterInterface_JCalls;
 void broadcast_transaction_jcall(const void* this_arg, LDKTransaction tx) {
        LDKBroadcasterInterface_JCalls *j_calls = (LDKBroadcasterInterface_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->broadcast_transaction_meth, tx);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKTransaction *tx_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *tx_copy = tx;
+       long tx_ref = (long)tx_copy;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->broadcast_transaction_meth, tx_ref);
 }
 static void LDKBroadcasterInterface_JCalls_free(void* this_arg) {
        LDKBroadcasterInterface_JCalls *j_calls = (LDKBroadcasterInterface_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -744,13 +2616,13 @@ static void* LDKBroadcasterInterface_JCalls_clone(const void* this_arg) {
 }
 static inline LDKBroadcasterInterface LDKBroadcasterInterface_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKBroadcasterInterface_JCalls *calls = MALLOC(sizeof(LDKBroadcasterInterface_JCalls), "LDKBroadcasterInterface_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
        calls->broadcast_transaction_meth = (*env)->GetMethodID(env, c, "broadcast_transaction", "(J)V");
-       assert(calls->broadcast_transaction_meth != NULL);
+       CHECK(calls->broadcast_transaction_meth != NULL);
 
        LDKBroadcasterInterface ret = {
                .this_arg = (void*) calls,
@@ -764,21 +2636,38 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKBroadcasterInterface_1new (
        *res_ptr = LDKBroadcasterInterface_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKBroadcasterInterface_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKBroadcasterInterface_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_BroadcasterInterface_1broadcast_1transaction(JNIEnv * _env, jclass _b, jlong this_arg, jlong tx) {
+       LDKBroadcasterInterface* this_arg_conv = (LDKBroadcasterInterface*)this_arg;
+       LDKTransaction tx_conv = *(LDKTransaction*)tx;
+       (this_arg_conv->broadcast_transaction)(this_arg_conv->this_arg, tx_conv);
+}
+
 typedef struct LDKFeeEstimator_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID get_est_sat_per_1000_weight_meth;
 } LDKFeeEstimator_JCalls;
 uint32_t get_est_sat_per_1000_weight_jcall(const void* this_arg, LDKConfirmationTarget confirmation_target) {
        LDKFeeEstimator_JCalls *j_calls = (LDKFeeEstimator_JCalls*) this_arg;
-       jclass confirmation_target_conv = LDKConfirmationTarget_to_java(j_calls->env, confirmation_target);
-       return (*j_calls->env)->CallIntMethod(j_calls->env, j_calls->o, j_calls->get_est_sat_per_1000_weight_meth, confirmation_target_conv);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jclass confirmation_target_conv = LDKConfirmationTarget_to_java(_env, confirmation_target);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallIntMethod(_env, obj, j_calls->get_est_sat_per_1000_weight_meth, confirmation_target_conv);
 }
 static void LDKFeeEstimator_JCalls_free(void* this_arg) {
        LDKFeeEstimator_JCalls *j_calls = (LDKFeeEstimator_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -789,13 +2678,13 @@ static void* LDKFeeEstimator_JCalls_clone(const void* this_arg) {
 }
 static inline LDKFeeEstimator LDKFeeEstimator_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKFeeEstimator_JCalls *calls = MALLOC(sizeof(LDKFeeEstimator_JCalls), "LDKFeeEstimator_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->get_est_sat_per_1000_weight_meth = (*env)->GetMethodID(env, c, "get_est_sat_per_1000_weight", "(Lorg/ldk/impl/bindings$LDKConfirmationTarget;)I");
-       assert(calls->get_est_sat_per_1000_weight_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->get_est_sat_per_1000_weight_meth = (*env)->GetMethodID(env, c, "get_est_sat_per_1000_weight", "(Lorg/ldk/enums/LDKConfirmationTarget;)I");
+       CHECK(calls->get_est_sat_per_1000_weight_meth != NULL);
 
        LDKFeeEstimator ret = {
                .this_arg = (void*) calls,
@@ -809,10 +2698,87 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKFeeEstimator_1new (JNIEnv *
        *res_ptr = LDKFeeEstimator_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKFeeEstimator_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKFeeEstimator_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_FeeEstimator_1get_1est_1sat_1per_11000_1weight(JNIEnv * _env, jclass _b, jlong this_arg, jclass confirmation_target) {
+       LDKFeeEstimator* this_arg_conv = (LDKFeeEstimator*)this_arg;
+       LDKConfirmationTarget confirmation_target_conv = LDKConfirmationTarget_from_java(_env, confirmation_target);
+       jint ret_val = (this_arg_conv->get_est_sat_per_1000_weight)(this_arg_conv->this_arg, confirmation_target_conv);
+       return ret_val;
+}
+
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C2TupleTempl_1usize_1_1Transaction_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_C2TupleTempl_usize__Transaction *vec = (LDKCVecTempl_C2TupleTempl_usize__Transaction*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKC2TupleTempl_usize__Transaction));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C2TupleTempl_1usize_1_1Transaction_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_C2TupleTempl_usize__Transaction *ret = MALLOC(sizeof(LDKCVecTempl_C2TupleTempl_usize__Transaction), "LDKCVecTempl_C2TupleTempl_usize__Transaction");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKC2TupleTempl_usize__Transaction) * ret->datalen, "LDKCVecTempl_C2TupleTempl_usize__Transaction Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKC2TupleTempl_usize__Transaction arr_elem_conv = *(LDKC2TupleTempl_usize__Transaction*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1Transaction_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_Transaction *vec = (LDKCVecTempl_Transaction*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKTransaction));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1Transaction_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_Transaction *ret = MALLOC(sizeof(LDKCVecTempl_Transaction), "LDKCVecTempl_Transaction");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKTransaction) * ret->datalen, "LDKCVecTempl_Transaction Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKTransaction arr_elem_conv = *(LDKTransaction*)arr_elem;
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C2TupleTempl_1ThirtyTwoBytes_1_1CVecTempl_1TxOut_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_C2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut *vec = (LDKCVecTempl_C2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C2TupleTempl_1ThirtyTwoBytes_1_1CVecTempl_1TxOut_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_C2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut *ret = MALLOC(sizeof(LDKCVecTempl_C2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut), "LDKCVecTempl_C2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut) * ret->datalen, "LDKCVecTempl_C2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut arr_elem_conv = *(LDKC2TupleTempl_ThirtyTwoBytes__CVecTempl_TxOut*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
 typedef struct LDKKeysInterface_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID get_node_secret_meth;
        jmethodID get_destination_script_meth;
        jmethodID get_shutdown_pubkey_meth;
@@ -821,43 +2787,72 @@ typedef struct LDKKeysInterface_JCalls {
 } LDKKeysInterface_JCalls;
 LDKSecretKey get_node_secret_jcall(const void* this_arg) {
        LDKKeysInterface_JCalls *j_calls = (LDKKeysInterface_JCalls*) this_arg;
-       LDKSecretKey* ret = (LDKSecretKey*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_node_secret_meth);
-       LDKSecretKey res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jbyteArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_node_secret_meth);
+       LDKSecretKey arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 32, arg_ref.bytes);
+       return arg_ref;
 }
 LDKCVec_u8Z get_destination_script_jcall(const void* this_arg) {
        LDKKeysInterface_JCalls *j_calls = (LDKKeysInterface_JCalls*) this_arg;
-       LDKCVec_u8Z* ret = (LDKCVec_u8Z*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_destination_script_meth);
-       LDKCVec_u8Z res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jbyteArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_destination_script_meth);
+       LDKCVec_u8Z arg_ref;
+       arg_ref.data = (*_env)->GetByteArrayElements (_env, arg, NULL);
+       arg_ref.datalen = (*_env)->GetArrayLength (_env, arg);
+       return arg_ref;
 }
 LDKPublicKey get_shutdown_pubkey_jcall(const void* this_arg) {
        LDKKeysInterface_JCalls *j_calls = (LDKKeysInterface_JCalls*) this_arg;
-       LDKPublicKey* ret = (LDKPublicKey*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_shutdown_pubkey_meth);
-       LDKPublicKey res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jbyteArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_shutdown_pubkey_meth);
+       LDKPublicKey arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 33, arg_ref.compressed_form);
+       return arg_ref;
 }
 LDKChannelKeys get_channel_keys_jcall(const void* this_arg, bool inbound, uint64_t channel_value_satoshis) {
        LDKKeysInterface_JCalls *j_calls = (LDKKeysInterface_JCalls*) this_arg;
-       LDKChannelKeys* ret = (LDKChannelKeys*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_channel_keys_meth, inbound, channel_value_satoshis);
-       LDKChannelKeys res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKChannelKeys* ret = (LDKChannelKeys*)(*_env)->CallLongMethod(_env, obj, j_calls->get_channel_keys_meth, inbound, channel_value_satoshis);
+       LDKChannelKeys ret_conv = *(LDKChannelKeys*)ret;
+       if (ret_conv.free == LDKChannelKeys_JCalls_free) {
+               // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
+               LDKChannelKeys_JCalls_clone(ret_conv.this_arg);
+       }
+       return ret_conv;
 }
 LDKThirtyTwoBytes get_secure_random_bytes_jcall(const void* this_arg) {
        LDKKeysInterface_JCalls *j_calls = (LDKKeysInterface_JCalls*) this_arg;
-       LDKThirtyTwoBytes* ret = (LDKThirtyTwoBytes*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_secure_random_bytes_meth);
-       LDKThirtyTwoBytes res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jbyteArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_secure_random_bytes_meth);
+       LDKThirtyTwoBytes arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 32, arg_ref.data);
+       return arg_ref;
 }
 static void LDKKeysInterface_JCalls_free(void* this_arg) {
        LDKKeysInterface_JCalls *j_calls = (LDKKeysInterface_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -868,21 +2863,21 @@ static void* LDKKeysInterface_JCalls_clone(const void* this_arg) {
 }
 static inline LDKKeysInterface LDKKeysInterface_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKKeysInterface_JCalls *calls = MALLOC(sizeof(LDKKeysInterface_JCalls), "LDKKeysInterface_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->get_node_secret_meth = (*env)->GetMethodID(env, c, "get_node_secret", "()J");
-       assert(calls->get_node_secret_meth != NULL);
-       calls->get_destination_script_meth = (*env)->GetMethodID(env, c, "get_destination_script", "()J");
-       assert(calls->get_destination_script_meth != NULL);
-       calls->get_shutdown_pubkey_meth = (*env)->GetMethodID(env, c, "get_shutdown_pubkey", "()J");
-       assert(calls->get_shutdown_pubkey_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->get_node_secret_meth = (*env)->GetMethodID(env, c, "get_node_secret", "()[B");
+       CHECK(calls->get_node_secret_meth != NULL);
+       calls->get_destination_script_meth = (*env)->GetMethodID(env, c, "get_destination_script", "()[B");
+       CHECK(calls->get_destination_script_meth != NULL);
+       calls->get_shutdown_pubkey_meth = (*env)->GetMethodID(env, c, "get_shutdown_pubkey", "()[B");
+       CHECK(calls->get_shutdown_pubkey_meth != NULL);
        calls->get_channel_keys_meth = (*env)->GetMethodID(env, c, "get_channel_keys", "(ZJ)J");
-       assert(calls->get_channel_keys_meth != NULL);
-       calls->get_secure_random_bytes_meth = (*env)->GetMethodID(env, c, "get_secure_random_bytes", "()J");
-       assert(calls->get_secure_random_bytes_meth != NULL);
+       CHECK(calls->get_channel_keys_meth != NULL);
+       calls->get_secure_random_bytes_meth = (*env)->GetMethodID(env, c, "get_secure_random_bytes", "()[B");
+       CHECK(calls->get_secure_random_bytes_meth != NULL);
 
        LDKKeysInterface ret = {
                .this_arg = (void*) calls,
@@ -900,10 +2895,162 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKKeysInterface_1new (JNIEnv
        *res_ptr = LDKKeysInterface_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKKeysInterface_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKKeysInterface_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_KeysInterface_1get_1node_1secret(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKKeysInterface* this_arg_conv = (LDKKeysInterface*)this_arg;
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 32, (this_arg_conv->get_node_secret)(this_arg_conv->this_arg).bytes);
+       return arg_arr;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_KeysInterface_1get_1destination_1script(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKKeysInterface* this_arg_conv = (LDKKeysInterface*)this_arg;
+       LDKCVec_u8Z arg_var = (this_arg_conv->get_destination_script)(this_arg_conv->this_arg);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_KeysInterface_1get_1shutdown_1pubkey(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKKeysInterface* this_arg_conv = (LDKKeysInterface*)this_arg;
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, (this_arg_conv->get_shutdown_pubkey)(this_arg_conv->this_arg).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_KeysInterface_1get_1channel_1keys(JNIEnv * _env, jclass _b, jlong this_arg, jboolean inbound, jlong channel_value_satoshis) {
+       LDKKeysInterface* this_arg_conv = (LDKKeysInterface*)this_arg;
+       LDKChannelKeys* ret = MALLOC(sizeof(LDKChannelKeys), "LDKChannelKeys");
+       *ret = (this_arg_conv->get_channel_keys)(this_arg_conv->this_arg, inbound, channel_value_satoshis);
+       return (long)ret;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_KeysInterface_1get_1secure_1random_1bytes(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKKeysInterface* this_arg_conv = (LDKKeysInterface*)this_arg;
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 32, (this_arg_conv->get_secure_random_bytes)(this_arg_conv->this_arg).data);
+       return arg_arr;
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1ChannelDetails_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_ChannelDetails *vec = (LDKCVecTempl_ChannelDetails*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1ChannelDetails_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_ChannelDetails *ret = MALLOC(sizeof(LDKCVecTempl_ChannelDetails), "LDKCVecTempl_ChannelDetails");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKChannelDetails) * ret->datalen, "LDKCVecTempl_ChannelDetails Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKChannelDetails arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = ChannelDetails_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+static jclass LDKNetAddress_IPv4_class = NULL;
+static jmethodID LDKNetAddress_IPv4_meth = NULL;
+static jclass LDKNetAddress_IPv6_class = NULL;
+static jmethodID LDKNetAddress_IPv6_meth = NULL;
+static jclass LDKNetAddress_OnionV2_class = NULL;
+static jmethodID LDKNetAddress_OnionV2_meth = NULL;
+static jclass LDKNetAddress_OnionV3_class = NULL;
+static jmethodID LDKNetAddress_OnionV3_meth = NULL;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024LDKNetAddress_init (JNIEnv * env, jclass _a) {
+       LDKNetAddress_IPv4_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKNetAddress$IPv4;"));
+       CHECK(LDKNetAddress_IPv4_class != NULL);
+       LDKNetAddress_IPv4_meth = (*env)->GetMethodID(env, LDKNetAddress_IPv4_class, "<init>", "([BS)V");
+       CHECK(LDKNetAddress_IPv4_meth != NULL);
+       LDKNetAddress_IPv6_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKNetAddress$IPv6;"));
+       CHECK(LDKNetAddress_IPv6_class != NULL);
+       LDKNetAddress_IPv6_meth = (*env)->GetMethodID(env, LDKNetAddress_IPv6_class, "<init>", "([BS)V");
+       CHECK(LDKNetAddress_IPv6_meth != NULL);
+       LDKNetAddress_OnionV2_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKNetAddress$OnionV2;"));
+       CHECK(LDKNetAddress_OnionV2_class != NULL);
+       LDKNetAddress_OnionV2_meth = (*env)->GetMethodID(env, LDKNetAddress_OnionV2_class, "<init>", "([BS)V");
+       CHECK(LDKNetAddress_OnionV2_meth != NULL);
+       LDKNetAddress_OnionV3_class =
+               (*env)->NewGlobalRef(env, (*env)->FindClass(env, "Lorg/ldk/impl/bindings$LDKNetAddress$OnionV3;"));
+       CHECK(LDKNetAddress_OnionV3_class != NULL);
+       LDKNetAddress_OnionV3_meth = (*env)->GetMethodID(env, LDKNetAddress_OnionV3_class, "<init>", "([BSBS)V");
+       CHECK(LDKNetAddress_OnionV3_meth != NULL);
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKNetAddress_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {
+       LDKNetAddress *obj = (LDKNetAddress*)ptr;
+       switch(obj->tag) {
+               case LDKNetAddress_IPv4: {
+                       jbyteArray addr_arr = (*_env)->NewByteArray(_env, 4);
+                       (*_env)->SetByteArrayRegion(_env, addr_arr, 0, 4, obj->i_pv4.addr.data);
+                       return (*_env)->NewObject(_env, LDKNetAddress_IPv4_class, LDKNetAddress_IPv4_meth, addr_arr, obj->i_pv4.port);
+               }
+               case LDKNetAddress_IPv6: {
+                       jbyteArray addr_arr = (*_env)->NewByteArray(_env, 16);
+                       (*_env)->SetByteArrayRegion(_env, addr_arr, 0, 16, obj->i_pv6.addr.data);
+                       return (*_env)->NewObject(_env, LDKNetAddress_IPv6_class, LDKNetAddress_IPv6_meth, addr_arr, obj->i_pv6.port);
+               }
+               case LDKNetAddress_OnionV2: {
+                       jbyteArray addr_arr = (*_env)->NewByteArray(_env, 10);
+                       (*_env)->SetByteArrayRegion(_env, addr_arr, 0, 10, obj->onion_v2.addr.data);
+                       return (*_env)->NewObject(_env, LDKNetAddress_OnionV2_class, LDKNetAddress_OnionV2_meth, addr_arr, obj->onion_v2.port);
+               }
+               case LDKNetAddress_OnionV3: {
+                       jbyteArray ed25519_pubkey_arr = (*_env)->NewByteArray(_env, 32);
+                       (*_env)->SetByteArrayRegion(_env, ed25519_pubkey_arr, 0, 32, obj->onion_v3.ed25519_pubkey.data);
+                       return (*_env)->NewObject(_env, LDKNetAddress_OnionV3_class, LDKNetAddress_OnionV3_meth, ed25519_pubkey_arr, obj->onion_v3.checksum, obj->onion_v3.version, obj->onion_v3.port);
+               }
+               default: abort();
+       }
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1NetAddress_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_NetAddress *vec = (LDKCVecTempl_NetAddress*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKNetAddress));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1NetAddress_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_NetAddress *ret = MALLOC(sizeof(LDKCVecTempl_NetAddress), "LDKCVecTempl_NetAddress");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKNetAddress) * ret->datalen, "LDKCVecTempl_NetAddress Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKNetAddress arr_elem_conv = *(LDKNetAddress*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
 typedef struct LDKChannelMessageHandler_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        LDKMessageSendEventsProvider_JCalls* MessageSendEventsProvider;
        jmethodID handle_open_channel_meth;
        jmethodID handle_accept_channel_meth;
@@ -927,84 +3074,322 @@ typedef struct LDKChannelMessageHandler_JCalls {
 } LDKChannelMessageHandler_JCalls;
 void handle_open_channel_jcall(const void* this_arg, LDKPublicKey their_node_id, LDKInitFeatures their_features, const LDKOpenChannel *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_open_channel_meth, their_node_id, their_features, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKInitFeatures their_features_var = their_features;
+       CHECK((((long)their_features_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&their_features_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long their_features_ref = (long)their_features_var.inner;
+       if (their_features_var.is_owned) {
+               their_features_ref |= 1;
+       }
+       LDKOpenChannel msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = OpenChannel_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_open_channel_meth, their_node_id_arr, their_features_ref, msg_ref);
 }
 void handle_accept_channel_jcall(const void* this_arg, LDKPublicKey their_node_id, LDKInitFeatures their_features, const LDKAcceptChannel *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_accept_channel_meth, their_node_id, their_features, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKInitFeatures their_features_var = their_features;
+       CHECK((((long)their_features_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&their_features_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long their_features_ref = (long)their_features_var.inner;
+       if (their_features_var.is_owned) {
+               their_features_ref |= 1;
+       }
+       LDKAcceptChannel msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = AcceptChannel_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_accept_channel_meth, their_node_id_arr, their_features_ref, msg_ref);
 }
 void handle_funding_created_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKFundingCreated *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_funding_created_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKFundingCreated msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = FundingCreated_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_funding_created_meth, their_node_id_arr, msg_ref);
 }
 void handle_funding_signed_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKFundingSigned *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_funding_signed_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKFundingSigned msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = FundingSigned_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_funding_signed_meth, their_node_id_arr, msg_ref);
 }
 void handle_funding_locked_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKFundingLocked *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_funding_locked_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKFundingLocked msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = FundingLocked_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_funding_locked_meth, their_node_id_arr, msg_ref);
 }
 void handle_shutdown_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKShutdown *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_shutdown_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKShutdown msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = Shutdown_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_shutdown_meth, their_node_id_arr, msg_ref);
 }
 void handle_closing_signed_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKClosingSigned *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_closing_signed_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKClosingSigned msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = ClosingSigned_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_closing_signed_meth, their_node_id_arr, msg_ref);
 }
 void handle_update_add_htlc_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKUpdateAddHTLC *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_update_add_htlc_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKUpdateAddHTLC msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = UpdateAddHTLC_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_update_add_htlc_meth, their_node_id_arr, msg_ref);
 }
 void handle_update_fulfill_htlc_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKUpdateFulfillHTLC *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_update_fulfill_htlc_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKUpdateFulfillHTLC msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = UpdateFulfillHTLC_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_update_fulfill_htlc_meth, their_node_id_arr, msg_ref);
 }
 void handle_update_fail_htlc_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKUpdateFailHTLC *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_update_fail_htlc_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKUpdateFailHTLC msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = UpdateFailHTLC_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_update_fail_htlc_meth, their_node_id_arr, msg_ref);
 }
 void handle_update_fail_malformed_htlc_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKUpdateFailMalformedHTLC *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_update_fail_malformed_htlc_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKUpdateFailMalformedHTLC msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = UpdateFailMalformedHTLC_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_update_fail_malformed_htlc_meth, their_node_id_arr, msg_ref);
 }
 void handle_commitment_signed_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKCommitmentSigned *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_commitment_signed_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKCommitmentSigned msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = CommitmentSigned_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_commitment_signed_meth, their_node_id_arr, msg_ref);
 }
 void handle_revoke_and_ack_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKRevokeAndACK *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_revoke_and_ack_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKRevokeAndACK msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = RevokeAndACK_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_revoke_and_ack_meth, their_node_id_arr, msg_ref);
 }
 void handle_update_fee_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKUpdateFee *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_update_fee_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKUpdateFee msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = UpdateFee_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_update_fee_meth, their_node_id_arr, msg_ref);
 }
 void handle_announcement_signatures_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKAnnouncementSignatures *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_announcement_signatures_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKAnnouncementSignatures msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = AnnouncementSignatures_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_announcement_signatures_meth, their_node_id_arr, msg_ref);
 }
 void peer_disconnected_jcall(const void* this_arg, LDKPublicKey their_node_id, bool no_connection_possible) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->peer_disconnected_meth, their_node_id, no_connection_possible);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->peer_disconnected_meth, their_node_id_arr, no_connection_possible);
 }
 void peer_connected_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKInit *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->peer_connected_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKInit msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = Init_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->peer_connected_meth, their_node_id_arr, msg_ref);
 }
 void handle_channel_reestablish_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKChannelReestablish *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_channel_reestablish_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKChannelReestablish msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = ChannelReestablish_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_channel_reestablish_meth, their_node_id_arr, msg_ref);
 }
 void handle_error_jcall(const void* this_arg, LDKPublicKey their_node_id, const LDKErrorMessage *msg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_error_meth, their_node_id, msg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray their_node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, their_node_id_arr, 0, 33, their_node_id.compressed_form);
+       LDKErrorMessage msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = ErrorMessage_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_error_meth, their_node_id_arr, msg_ref);
 }
 static void LDKChannelMessageHandler_JCalls_free(void* this_arg) {
        LDKChannelMessageHandler_JCalls *j_calls = (LDKChannelMessageHandler_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -1016,49 +3401,49 @@ static void* LDKChannelMessageHandler_JCalls_clone(const void* this_arg) {
 }
 static inline LDKChannelMessageHandler LDKChannelMessageHandler_init (JNIEnv * env, jclass _a, jobject o, jobject MessageSendEventsProvider) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKChannelMessageHandler_JCalls *calls = MALLOC(sizeof(LDKChannelMessageHandler_JCalls), "LDKChannelMessageHandler_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->handle_open_channel_meth = (*env)->GetMethodID(env, c, "handle_open_channel", "(JJJ)V");
-       assert(calls->handle_open_channel_meth != NULL);
-       calls->handle_accept_channel_meth = (*env)->GetMethodID(env, c, "handle_accept_channel", "(JJJ)V");
-       assert(calls->handle_accept_channel_meth != NULL);
-       calls->handle_funding_created_meth = (*env)->GetMethodID(env, c, "handle_funding_created", "(JJ)V");
-       assert(calls->handle_funding_created_meth != NULL);
-       calls->handle_funding_signed_meth = (*env)->GetMethodID(env, c, "handle_funding_signed", "(JJ)V");
-       assert(calls->handle_funding_signed_meth != NULL);
-       calls->handle_funding_locked_meth = (*env)->GetMethodID(env, c, "handle_funding_locked", "(JJ)V");
-       assert(calls->handle_funding_locked_meth != NULL);
-       calls->handle_shutdown_meth = (*env)->GetMethodID(env, c, "handle_shutdown", "(JJ)V");
-       assert(calls->handle_shutdown_meth != NULL);
-       calls->handle_closing_signed_meth = (*env)->GetMethodID(env, c, "handle_closing_signed", "(JJ)V");
-       assert(calls->handle_closing_signed_meth != NULL);
-       calls->handle_update_add_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_add_htlc", "(JJ)V");
-       assert(calls->handle_update_add_htlc_meth != NULL);
-       calls->handle_update_fulfill_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_fulfill_htlc", "(JJ)V");
-       assert(calls->handle_update_fulfill_htlc_meth != NULL);
-       calls->handle_update_fail_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_fail_htlc", "(JJ)V");
-       assert(calls->handle_update_fail_htlc_meth != NULL);
-       calls->handle_update_fail_malformed_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_fail_malformed_htlc", "(JJ)V");
-       assert(calls->handle_update_fail_malformed_htlc_meth != NULL);
-       calls->handle_commitment_signed_meth = (*env)->GetMethodID(env, c, "handle_commitment_signed", "(JJ)V");
-       assert(calls->handle_commitment_signed_meth != NULL);
-       calls->handle_revoke_and_ack_meth = (*env)->GetMethodID(env, c, "handle_revoke_and_ack", "(JJ)V");
-       assert(calls->handle_revoke_and_ack_meth != NULL);
-       calls->handle_update_fee_meth = (*env)->GetMethodID(env, c, "handle_update_fee", "(JJ)V");
-       assert(calls->handle_update_fee_meth != NULL);
-       calls->handle_announcement_signatures_meth = (*env)->GetMethodID(env, c, "handle_announcement_signatures", "(JJ)V");
-       assert(calls->handle_announcement_signatures_meth != NULL);
-       calls->peer_disconnected_meth = (*env)->GetMethodID(env, c, "peer_disconnected", "(JZ)V");
-       assert(calls->peer_disconnected_meth != NULL);
-       calls->peer_connected_meth = (*env)->GetMethodID(env, c, "peer_connected", "(JJ)V");
-       assert(calls->peer_connected_meth != NULL);
-       calls->handle_channel_reestablish_meth = (*env)->GetMethodID(env, c, "handle_channel_reestablish", "(JJ)V");
-       assert(calls->handle_channel_reestablish_meth != NULL);
-       calls->handle_error_meth = (*env)->GetMethodID(env, c, "handle_error", "(JJ)V");
-       assert(calls->handle_error_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->handle_open_channel_meth = (*env)->GetMethodID(env, c, "handle_open_channel", "([BJJ)V");
+       CHECK(calls->handle_open_channel_meth != NULL);
+       calls->handle_accept_channel_meth = (*env)->GetMethodID(env, c, "handle_accept_channel", "([BJJ)V");
+       CHECK(calls->handle_accept_channel_meth != NULL);
+       calls->handle_funding_created_meth = (*env)->GetMethodID(env, c, "handle_funding_created", "([BJ)V");
+       CHECK(calls->handle_funding_created_meth != NULL);
+       calls->handle_funding_signed_meth = (*env)->GetMethodID(env, c, "handle_funding_signed", "([BJ)V");
+       CHECK(calls->handle_funding_signed_meth != NULL);
+       calls->handle_funding_locked_meth = (*env)->GetMethodID(env, c, "handle_funding_locked", "([BJ)V");
+       CHECK(calls->handle_funding_locked_meth != NULL);
+       calls->handle_shutdown_meth = (*env)->GetMethodID(env, c, "handle_shutdown", "([BJ)V");
+       CHECK(calls->handle_shutdown_meth != NULL);
+       calls->handle_closing_signed_meth = (*env)->GetMethodID(env, c, "handle_closing_signed", "([BJ)V");
+       CHECK(calls->handle_closing_signed_meth != NULL);
+       calls->handle_update_add_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_add_htlc", "([BJ)V");
+       CHECK(calls->handle_update_add_htlc_meth != NULL);
+       calls->handle_update_fulfill_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_fulfill_htlc", "([BJ)V");
+       CHECK(calls->handle_update_fulfill_htlc_meth != NULL);
+       calls->handle_update_fail_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_fail_htlc", "([BJ)V");
+       CHECK(calls->handle_update_fail_htlc_meth != NULL);
+       calls->handle_update_fail_malformed_htlc_meth = (*env)->GetMethodID(env, c, "handle_update_fail_malformed_htlc", "([BJ)V");
+       CHECK(calls->handle_update_fail_malformed_htlc_meth != NULL);
+       calls->handle_commitment_signed_meth = (*env)->GetMethodID(env, c, "handle_commitment_signed", "([BJ)V");
+       CHECK(calls->handle_commitment_signed_meth != NULL);
+       calls->handle_revoke_and_ack_meth = (*env)->GetMethodID(env, c, "handle_revoke_and_ack", "([BJ)V");
+       CHECK(calls->handle_revoke_and_ack_meth != NULL);
+       calls->handle_update_fee_meth = (*env)->GetMethodID(env, c, "handle_update_fee", "([BJ)V");
+       CHECK(calls->handle_update_fee_meth != NULL);
+       calls->handle_announcement_signatures_meth = (*env)->GetMethodID(env, c, "handle_announcement_signatures", "([BJ)V");
+       CHECK(calls->handle_announcement_signatures_meth != NULL);
+       calls->peer_disconnected_meth = (*env)->GetMethodID(env, c, "peer_disconnected", "([BZ)V");
+       CHECK(calls->peer_disconnected_meth != NULL);
+       calls->peer_connected_meth = (*env)->GetMethodID(env, c, "peer_connected", "([BJ)V");
+       CHECK(calls->peer_connected_meth != NULL);
+       calls->handle_channel_reestablish_meth = (*env)->GetMethodID(env, c, "handle_channel_reestablish", "([BJ)V");
+       CHECK(calls->handle_channel_reestablish_meth != NULL);
+       calls->handle_error_meth = (*env)->GetMethodID(env, c, "handle_error", "([BJ)V");
+       CHECK(calls->handle_error_meth != NULL);
 
        LDKChannelMessageHandler ret = {
                .this_arg = (void*) calls,
@@ -1092,10 +3477,478 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKChannelMessageHandler_1new
        *res_ptr = LDKChannelMessageHandler_init(env, _a, o, MessageSendEventsProvider);
        return (long)res_ptr;
 }
-typedef struct LDKRoutingMessageHandler_JCalls {
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKChannelMessageHandler_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKChannelMessageHandler_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1open_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong their_features, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKInitFeatures their_features_conv;
+       their_features_conv.inner = (void*)(their_features & (~1));
+       their_features_conv.is_owned = (their_features & 1) || (their_features == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKOpenChannel msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_open_channel)(this_arg_conv->this_arg, their_node_id_ref, their_features_conv, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1accept_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong their_features, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKInitFeatures their_features_conv;
+       their_features_conv.inner = (void*)(their_features & (~1));
+       their_features_conv.is_owned = (their_features & 1) || (their_features == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKAcceptChannel msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_accept_channel)(this_arg_conv->this_arg, their_node_id_ref, their_features_conv, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1funding_1created(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKFundingCreated msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_funding_created)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1funding_1signed(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKFundingSigned msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_funding_signed)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1funding_1locked(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKFundingLocked msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_funding_locked)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1shutdown(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKShutdown msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_shutdown)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1closing_1signed(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKClosingSigned msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_closing_signed)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1update_1add_1htlc(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKUpdateAddHTLC msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_update_add_htlc)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1update_1fulfill_1htlc(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKUpdateFulfillHTLC msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_update_fulfill_htlc)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1update_1fail_1htlc(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKUpdateFailHTLC msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_update_fail_htlc)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1update_1fail_1malformed_1htlc(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKUpdateFailMalformedHTLC msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_update_fail_malformed_htlc)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1commitment_1signed(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKCommitmentSigned msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_commitment_signed)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1revoke_1and_1ack(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKRevokeAndACK msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_revoke_and_ack)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1update_1fee(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKUpdateFee msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_update_fee)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1announcement_1signatures(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKAnnouncementSignatures msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_announcement_signatures)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1peer_1disconnected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jboolean no_connection_possible) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       (this_arg_conv->peer_disconnected)(this_arg_conv->this_arg, their_node_id_ref, no_connection_possible);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1peer_1connected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKInit msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->peer_connected)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1channel_1reestablish(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKChannelReestablish msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_channel_reestablish)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1handle_1error(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong msg) {
+       LDKChannelMessageHandler* this_arg_conv = (LDKChannelMessageHandler*)this_arg;
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
+       LDKErrorMessage msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       (this_arg_conv->handle_error)(this_arg_conv->this_arg, their_node_id_ref, &msg_conv);
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1ChannelMonitor_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_ChannelMonitor *vec = (LDKCVecTempl_ChannelMonitor*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1ChannelMonitor_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_ChannelMonitor *ret = MALLOC(sizeof(LDKCVecTempl_ChannelMonitor), "LDKCVecTempl_ChannelMonitor");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKChannelMonitor) * ret->datalen, "LDKCVecTempl_ChannelMonitor Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKChannelMonitor arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       // Warning: we may need a move here but can't clone!
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1u64_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_u64 *vec = (LDKCVecTempl_u64*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(uint64_t));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1u64_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_u64 *ret = MALLOC(sizeof(LDKCVecTempl_u64), "LDKCVecTempl_u64");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(uint64_t) * ret->datalen, "LDKCVecTempl_u64 Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       ret->data[i] = java_elems[i];
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateAddHTLC_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_UpdateAddHTLC *vec = (LDKCVecTempl_UpdateAddHTLC*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateAddHTLC_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_UpdateAddHTLC *ret = MALLOC(sizeof(LDKCVecTempl_UpdateAddHTLC), "LDKCVecTempl_UpdateAddHTLC");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKUpdateAddHTLC) * ret->datalen, "LDKCVecTempl_UpdateAddHTLC Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKUpdateAddHTLC arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = UpdateAddHTLC_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateFulfillHTLC_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_UpdateFulfillHTLC *vec = (LDKCVecTempl_UpdateFulfillHTLC*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateFulfillHTLC_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_UpdateFulfillHTLC *ret = MALLOC(sizeof(LDKCVecTempl_UpdateFulfillHTLC), "LDKCVecTempl_UpdateFulfillHTLC");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKUpdateFulfillHTLC) * ret->datalen, "LDKCVecTempl_UpdateFulfillHTLC Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKUpdateFulfillHTLC arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = UpdateFulfillHTLC_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateFailHTLC_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_UpdateFailHTLC *vec = (LDKCVecTempl_UpdateFailHTLC*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateFailHTLC_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_UpdateFailHTLC *ret = MALLOC(sizeof(LDKCVecTempl_UpdateFailHTLC), "LDKCVecTempl_UpdateFailHTLC");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKUpdateFailHTLC) * ret->datalen, "LDKCVecTempl_UpdateFailHTLC Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKUpdateFailHTLC arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = UpdateFailHTLC_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateFailMalformedHTLC_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_UpdateFailMalformedHTLC *vec = (LDKCVecTempl_UpdateFailMalformedHTLC*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1UpdateFailMalformedHTLC_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_UpdateFailMalformedHTLC *ret = MALLOC(sizeof(LDKCVecTempl_UpdateFailMalformedHTLC), "LDKCVecTempl_UpdateFailMalformedHTLC");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKUpdateFailMalformedHTLC) * ret->datalen, "LDKCVecTempl_UpdateFailMalformedHTLC Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKUpdateFailMalformedHTLC arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = UpdateFailMalformedHTLC_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1boolLightningErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_boolLightningErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1boolLightningErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_boolLightningErrorZ *val = (LDKCResult_boolLightningErrorZ*)arg;
+       CHECK(val->result_ok);
+       return *val->contents.result;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1boolLightningErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_boolLightningErrorZ *val = (LDKCResult_boolLightningErrorZ*)arg;
+       CHECK(!val->result_ok);
+       LDKLightningError err_var = (*val->contents.err);
+       CHECK((((long)err_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&err_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long err_ref = (long)err_var.inner & ~1;
+       return err_ref;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C3TupleTempl_1ChannelAnnouncement_1_1ChannelUpdate_1_1ChannelUpdate_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_C3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate *vec = (LDKCVecTempl_C3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C3TupleTempl_1ChannelAnnouncement_1_1ChannelUpdate_1_1ChannelUpdate_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_C3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate *ret = MALLOC(sizeof(LDKCVecTempl_C3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate), "LDKCVecTempl_C3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate) * ret->datalen, "LDKCVecTempl_C3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate arr_elem_conv = *(LDKC3TupleTempl_ChannelAnnouncement__ChannelUpdate__ChannelUpdate*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1NodeAnnouncement_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_NodeAnnouncement *vec = (LDKCVecTempl_NodeAnnouncement*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1NodeAnnouncement_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_NodeAnnouncement *ret = MALLOC(sizeof(LDKCVecTempl_NodeAnnouncement), "LDKCVecTempl_NodeAnnouncement");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKNodeAnnouncement) * ret->datalen, "LDKCVecTempl_NodeAnnouncement Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKNodeAnnouncement arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = NodeAnnouncement_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+typedef struct LDKRoutingMessageHandler_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID handle_node_announcement_meth;
        jmethodID handle_channel_announcement_meth;
        jmethodID handle_channel_update_meth;
@@ -1106,51 +3959,131 @@ typedef struct LDKRoutingMessageHandler_JCalls {
 } LDKRoutingMessageHandler_JCalls;
 LDKCResult_boolLightningErrorZ handle_node_announcement_jcall(const void* this_arg, const LDKNodeAnnouncement *msg) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
-       LDKCResult_boolLightningErrorZ* ret = (LDKCResult_boolLightningErrorZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->handle_node_announcement_meth, msg);
-       LDKCResult_boolLightningErrorZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKNodeAnnouncement msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = NodeAnnouncement_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_boolLightningErrorZ* ret = (LDKCResult_boolLightningErrorZ*)(*_env)->CallLongMethod(_env, obj, j_calls->handle_node_announcement_meth, msg_ref);
+       LDKCResult_boolLightningErrorZ ret_conv = *(LDKCResult_boolLightningErrorZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_boolLightningErrorZ handle_channel_announcement_jcall(const void* this_arg, const LDKChannelAnnouncement *msg) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
-       LDKCResult_boolLightningErrorZ* ret = (LDKCResult_boolLightningErrorZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->handle_channel_announcement_meth, msg);
-       LDKCResult_boolLightningErrorZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKChannelAnnouncement msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = ChannelAnnouncement_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_boolLightningErrorZ* ret = (LDKCResult_boolLightningErrorZ*)(*_env)->CallLongMethod(_env, obj, j_calls->handle_channel_announcement_meth, msg_ref);
+       LDKCResult_boolLightningErrorZ ret_conv = *(LDKCResult_boolLightningErrorZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 LDKCResult_boolLightningErrorZ handle_channel_update_jcall(const void* this_arg, const LDKChannelUpdate *msg) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
-       LDKCResult_boolLightningErrorZ* ret = (LDKCResult_boolLightningErrorZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->handle_channel_update_meth, msg);
-       LDKCResult_boolLightningErrorZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKChannelUpdate msg_var = *msg;
+       if (msg->inner != NULL)
+               msg_var = ChannelUpdate_clone(msg);
+       CHECK((((long)msg_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&msg_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long msg_ref = (long)msg_var.inner & ~1;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       LDKCResult_boolLightningErrorZ* ret = (LDKCResult_boolLightningErrorZ*)(*_env)->CallLongMethod(_env, obj, j_calls->handle_channel_update_meth, msg_ref);
+       LDKCResult_boolLightningErrorZ ret_conv = *(LDKCResult_boolLightningErrorZ*)ret;
+       FREE((void*)ret);
+       return ret_conv;
 }
 void handle_htlc_fail_channel_update_jcall(const void* this_arg, const LDKHTLCFailChannelUpdate *update) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->handle_htlc_fail_channel_update_meth, update);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       long ret_update = (long)update;
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->handle_htlc_fail_channel_update_meth, ret_update);
 }
 LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ get_next_channel_announcements_jcall(const void* this_arg, uint64_t starting_point, uint8_t batch_amount) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
-       LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ* ret = (LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_next_channel_announcements_meth, starting_point, batch_amount);
-       LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jlongArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_next_channel_announcements_meth, starting_point, batch_amount);
+       LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ), "LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t l = 0; l < arg_constr.datalen; l++) {
+               long arr_conv_63 = arg_vals[l];
+               LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ arr_conv_63_conv = *(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ*)arr_conv_63;
+               FREE((void*)arr_conv_63);
+               arg_constr.data[l] = arr_conv_63_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       return arg_constr;
 }
 LDKCVec_NodeAnnouncementZ get_next_node_announcements_jcall(const void* this_arg, LDKPublicKey starting_point, uint8_t batch_amount) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
-       LDKCVec_NodeAnnouncementZ* ret = (LDKCVec_NodeAnnouncementZ*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->get_next_node_announcements_meth, starting_point, batch_amount);
-       LDKCVec_NodeAnnouncementZ res = *ret;
-       FREE(ret);
-       return res;
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray starting_point_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, starting_point_arr, 0, 33, starting_point.compressed_form);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       jlongArray arg = (*_env)->CallObjectMethod(_env, obj, j_calls->get_next_node_announcements_meth, starting_point_arr, batch_amount);
+       LDKCVec_NodeAnnouncementZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKNodeAnnouncement), "LDKCVec_NodeAnnouncementZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t s = 0; s < arg_constr.datalen; s++) {
+               long arr_conv_18 = arg_vals[s];
+               LDKNodeAnnouncement arr_conv_18_conv;
+               arr_conv_18_conv.inner = (void*)(arr_conv_18 & (~1));
+               arr_conv_18_conv.is_owned = (arr_conv_18 & 1) || (arr_conv_18 == 0);
+               if (arr_conv_18_conv.inner != NULL)
+                       arr_conv_18_conv = NodeAnnouncement_clone(&arr_conv_18_conv);
+               arg_constr.data[s] = arr_conv_18_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       return arg_constr;
 }
 bool should_request_full_sync_jcall(const void* this_arg, LDKPublicKey node_id) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
-       return (*j_calls->env)->CallBooleanMethod(j_calls->env, j_calls->o, j_calls->should_request_full_sync_meth, node_id);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jbyteArray node_id_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, node_id_arr, 0, 33, node_id.compressed_form);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallBooleanMethod(_env, obj, j_calls->should_request_full_sync_meth, node_id_arr);
 }
 static void LDKRoutingMessageHandler_JCalls_free(void* this_arg) {
        LDKRoutingMessageHandler_JCalls *j_calls = (LDKRoutingMessageHandler_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -1161,25 +4094,25 @@ static void* LDKRoutingMessageHandler_JCalls_clone(const void* this_arg) {
 }
 static inline LDKRoutingMessageHandler LDKRoutingMessageHandler_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKRoutingMessageHandler_JCalls *calls = MALLOC(sizeof(LDKRoutingMessageHandler_JCalls), "LDKRoutingMessageHandler_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
        calls->handle_node_announcement_meth = (*env)->GetMethodID(env, c, "handle_node_announcement", "(J)J");
-       assert(calls->handle_node_announcement_meth != NULL);
+       CHECK(calls->handle_node_announcement_meth != NULL);
        calls->handle_channel_announcement_meth = (*env)->GetMethodID(env, c, "handle_channel_announcement", "(J)J");
-       assert(calls->handle_channel_announcement_meth != NULL);
+       CHECK(calls->handle_channel_announcement_meth != NULL);
        calls->handle_channel_update_meth = (*env)->GetMethodID(env, c, "handle_channel_update", "(J)J");
-       assert(calls->handle_channel_update_meth != NULL);
+       CHECK(calls->handle_channel_update_meth != NULL);
        calls->handle_htlc_fail_channel_update_meth = (*env)->GetMethodID(env, c, "handle_htlc_fail_channel_update", "(J)V");
-       assert(calls->handle_htlc_fail_channel_update_meth != NULL);
-       calls->get_next_channel_announcements_meth = (*env)->GetMethodID(env, c, "get_next_channel_announcements", "(JB)J");
-       assert(calls->get_next_channel_announcements_meth != NULL);
-       calls->get_next_node_announcements_meth = (*env)->GetMethodID(env, c, "get_next_node_announcements", "(JB)J");
-       assert(calls->get_next_node_announcements_meth != NULL);
-       calls->should_request_full_sync_meth = (*env)->GetMethodID(env, c, "should_request_full_sync", "(J)Z");
-       assert(calls->should_request_full_sync_meth != NULL);
+       CHECK(calls->handle_htlc_fail_channel_update_meth != NULL);
+       calls->get_next_channel_announcements_meth = (*env)->GetMethodID(env, c, "get_next_channel_announcements", "(JB)[J");
+       CHECK(calls->get_next_channel_announcements_meth != NULL);
+       calls->get_next_node_announcements_meth = (*env)->GetMethodID(env, c, "get_next_node_announcements", "([BB)[J");
+       CHECK(calls->get_next_node_announcements_meth != NULL);
+       calls->should_request_full_sync_meth = (*env)->GetMethodID(env, c, "should_request_full_sync", "([B)Z");
+       CHECK(calls->should_request_full_sync_meth != NULL);
 
        LDKRoutingMessageHandler ret = {
                .this_arg = (void*) calls,
@@ -1199,10 +4132,98 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKRoutingMessageHandler_1new
        *res_ptr = LDKRoutingMessageHandler_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKRoutingMessageHandler_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKRoutingMessageHandler_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1handle_1node_1announcement(JNIEnv * _env, jclass _b, jlong this_arg, jlong msg) {
+       LDKRoutingMessageHandler* this_arg_conv = (LDKRoutingMessageHandler*)this_arg;
+       LDKNodeAnnouncement msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       LDKCResult_boolLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolLightningErrorZ), "LDKCResult_boolLightningErrorZ");
+       *ret_conv = (this_arg_conv->handle_node_announcement)(this_arg_conv->this_arg, &msg_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1handle_1channel_1announcement(JNIEnv * _env, jclass _b, jlong this_arg, jlong msg) {
+       LDKRoutingMessageHandler* this_arg_conv = (LDKRoutingMessageHandler*)this_arg;
+       LDKChannelAnnouncement msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       LDKCResult_boolLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolLightningErrorZ), "LDKCResult_boolLightningErrorZ");
+       *ret_conv = (this_arg_conv->handle_channel_announcement)(this_arg_conv->this_arg, &msg_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1handle_1channel_1update(JNIEnv * _env, jclass _b, jlong this_arg, jlong msg) {
+       LDKRoutingMessageHandler* this_arg_conv = (LDKRoutingMessageHandler*)this_arg;
+       LDKChannelUpdate msg_conv;
+       msg_conv.inner = (void*)(msg & (~1));
+       msg_conv.is_owned = (msg & 1) || (msg == 0);
+       LDKCResult_boolLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolLightningErrorZ), "LDKCResult_boolLightningErrorZ");
+       *ret_conv = (this_arg_conv->handle_channel_update)(this_arg_conv->this_arg, &msg_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1handle_1htlc_1fail_1channel_1update(JNIEnv * _env, jclass _b, jlong this_arg, jlong update) {
+       LDKRoutingMessageHandler* this_arg_conv = (LDKRoutingMessageHandler*)this_arg;
+       LDKHTLCFailChannelUpdate* update_conv = (LDKHTLCFailChannelUpdate*)update;
+       (this_arg_conv->handle_htlc_fail_channel_update)(this_arg_conv->this_arg, update_conv);
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1get_1next_1channel_1announcements(JNIEnv * _env, jclass _b, jlong this_arg, jlong starting_point, jbyte batch_amount) {
+       LDKRoutingMessageHandler* this_arg_conv = (LDKRoutingMessageHandler*)this_arg;
+       LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ ret_var = (this_arg_conv->get_next_channel_announcements)(this_arg_conv->this_arg, starting_point, batch_amount);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t l = 0; l < ret_var.datalen; l++) {
+               LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ* arr_conv_63_ref = MALLOC(sizeof(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ), "LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ");
+               *arr_conv_63_ref = ret_var.data[l];
+               ret_arr_ptr[l] = (long)arr_conv_63_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       CVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ_free(ret_var);
+       return ret_arr;
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1get_1next_1node_1announcements(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray starting_point, jbyte batch_amount) {
+       LDKRoutingMessageHandler* this_arg_conv = (LDKRoutingMessageHandler*)this_arg;
+       LDKPublicKey starting_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, starting_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, starting_point, 0, 33, starting_point_ref.compressed_form);
+       LDKCVec_NodeAnnouncementZ ret_var = (this_arg_conv->get_next_node_announcements)(this_arg_conv->this_arg, starting_point_ref, batch_amount);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t s = 0; s < ret_var.datalen; s++) {
+               LDKNodeAnnouncement arr_conv_18_var = ret_var.data[s];
+               CHECK((((long)arr_conv_18_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+               CHECK((((long)&arr_conv_18_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+               long arr_conv_18_ref = (long)arr_conv_18_var.inner;
+               if (arr_conv_18_var.is_owned) {
+                       arr_conv_18_ref |= 1;
+               }
+               ret_arr_ptr[s] = arr_conv_18_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       FREE(ret_var.data);
+       return ret_arr;
+}
+
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1should_1request_1full_1sync(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray node_id) {
+       LDKRoutingMessageHandler* this_arg_conv = (LDKRoutingMessageHandler*)this_arg;
+       LDKPublicKey node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, node_id, 0, 33, node_id_ref.compressed_form);
+       jboolean ret_val = (this_arg_conv->should_request_full_sync)(this_arg_conv->this_arg, node_id_ref);
+       return ret_val;
+}
+
 typedef struct LDKSocketDescriptor_JCalls {
        atomic_size_t refcnt;
-       JNIEnv *env;
-       jobject o;
+       JavaVM *vm;
+       jweak o;
        jmethodID send_data_meth;
        jmethodID disconnect_socket_meth;
        jmethodID eq_meth;
@@ -1210,24 +4231,45 @@ typedef struct LDKSocketDescriptor_JCalls {
 } LDKSocketDescriptor_JCalls;
 uintptr_t send_data_jcall(void* this_arg, LDKu8slice data, bool resume_read) {
        LDKSocketDescriptor_JCalls *j_calls = (LDKSocketDescriptor_JCalls*) this_arg;
-       return (*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->send_data_meth, data, resume_read);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       LDKu8slice data_var = data;
+       jbyteArray data_arr = (*_env)->NewByteArray(_env, data_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, data_arr, 0, data_var.datalen, data_var.data);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallLongMethod(_env, obj, j_calls->send_data_meth, data_arr, resume_read);
 }
 void disconnect_socket_jcall(void* this_arg) {
        LDKSocketDescriptor_JCalls *j_calls = (LDKSocketDescriptor_JCalls*) this_arg;
-       return (*j_calls->env)->CallVoidMethod(j_calls->env, j_calls->o, j_calls->disconnect_socket_meth);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallVoidMethod(_env, obj, j_calls->disconnect_socket_meth);
 }
 bool eq_jcall(const void* this_arg, const void *other_arg) {
        LDKSocketDescriptor_JCalls *j_calls = (LDKSocketDescriptor_JCalls*) this_arg;
-       return (*j_calls->env)->CallBooleanMethod(j_calls->env, j_calls->o, j_calls->eq_meth, other_arg);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallBooleanMethod(_env, obj, j_calls->eq_meth, other_arg);
 }
 uint64_t hash_jcall(const void* this_arg) {
        LDKSocketDescriptor_JCalls *j_calls = (LDKSocketDescriptor_JCalls*) this_arg;
-       return (*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->hash_meth);
+       JNIEnv *_env;
+       DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);
+       jobject obj = (*_env)->NewLocalRef(_env, j_calls->o);
+       CHECK(obj != NULL);
+       return (*_env)->CallLongMethod(_env, obj, j_calls->hash_meth);
 }
 static void LDKSocketDescriptor_JCalls_free(void* this_arg) {
        LDKSocketDescriptor_JCalls *j_calls = (LDKSocketDescriptor_JCalls*) this_arg;
        if (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {
-               (*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);
+               JNIEnv *env;
+               DO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);
+               (*env)->DeleteWeakGlobalRef(env, j_calls->o);
                FREE(j_calls);
        }
 }
@@ -1238,19 +4280,19 @@ static void* LDKSocketDescriptor_JCalls_clone(const void* this_arg) {
 }
 static inline LDKSocketDescriptor LDKSocketDescriptor_init (JNIEnv * env, jclass _a, jobject o) {
        jclass c = (*env)->GetObjectClass(env, o);
-       assert(c != NULL);
+       CHECK(c != NULL);
        LDKSocketDescriptor_JCalls *calls = MALLOC(sizeof(LDKSocketDescriptor_JCalls), "LDKSocketDescriptor_JCalls");
        atomic_init(&calls->refcnt, 1);
-       calls->env = env;
-       calls->o = (*env)->NewGlobalRef(env, o);
-       calls->send_data_meth = (*env)->GetMethodID(env, c, "send_data", "(JZ)J");
-       assert(calls->send_data_meth != NULL);
+       DO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);
+       calls->o = (*env)->NewWeakGlobalRef(env, o);
+       calls->send_data_meth = (*env)->GetMethodID(env, c, "send_data", "([BZ)J");
+       CHECK(calls->send_data_meth != NULL);
        calls->disconnect_socket_meth = (*env)->GetMethodID(env, c, "disconnect_socket", "()V");
-       assert(calls->disconnect_socket_meth != NULL);
-       calls->eq_meth = (*env)->GetMethodID(env, c, "eq", "(V)Z");
-       assert(calls->eq_meth != NULL);
+       CHECK(calls->disconnect_socket_meth != NULL);
+       calls->eq_meth = (*env)->GetMethodID(env, c, "eq", "(J)Z");
+       CHECK(calls->eq_meth != NULL);
        calls->hash_meth = (*env)->GetMethodID(env, c, "hash", "()J");
-       assert(calls->hash_meth != NULL);
+       CHECK(calls->hash_meth != NULL);
 
        LDKSocketDescriptor ret = {
                .this_arg = (void*) calls,
@@ -1268,1042 +4310,1903 @@ JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_LDKSocketDescriptor_1new (JNIE
        *res_ptr = LDKSocketDescriptor_init(env, _a, o);
        return (long)res_ptr;
 }
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKSocketDescriptor_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {
+       jobject ret = (*env)->NewLocalRef(env, ((LDKSocketDescriptor_JCalls*)val)->o);
+       CHECK(ret != NULL);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_SocketDescriptor_1send_1data(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray data, jboolean resume_read) {
+       LDKSocketDescriptor* this_arg_conv = (LDKSocketDescriptor*)this_arg;
+       LDKu8slice data_ref;
+       data_ref.data = (*_env)->GetByteArrayElements (_env, data, NULL);
+       data_ref.datalen = (*_env)->GetArrayLength (_env, data);
+       jlong ret_val = (this_arg_conv->send_data)(this_arg_conv->this_arg, data_ref, resume_read);
+       (*_env)->ReleaseByteArrayElements(_env, data, (int8_t*)data_ref.data, 0);
+       return ret_val;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_SocketDescriptor_1disconnect_1socket(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKSocketDescriptor* this_arg_conv = (LDKSocketDescriptor*)this_arg;
+       (this_arg_conv->disconnect_socket)(this_arg_conv->this_arg);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_SocketDescriptor_1hash(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKSocketDescriptor* this_arg_conv = (LDKSocketDescriptor*)this_arg;
+       jlong ret_val = (this_arg_conv->hash)(this_arg_conv->this_arg);
+       return ret_val;
+}
+
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1PublicKey_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_PublicKey *vec = (LDKCVecTempl_PublicKey*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKPublicKey));
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1CVec_1u8ZPeerHandleErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_CVec_u8ZPeerHandleErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKCResult_1CVec_1u8ZPeerHandleErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_CVec_u8ZPeerHandleErrorZ *val = (LDKCResult_CVec_u8ZPeerHandleErrorZ*)arg;
+       CHECK(val->result_ok);
+       LDKCVecTempl_u8 res_var = (*val->contents.result);
+       jbyteArray res_arr = (*_env)->NewByteArray(_env, res_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, res_arr, 0, res_var.datalen, res_var.data);
+       return res_arr;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1CVec_1u8ZPeerHandleErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_CVec_u8ZPeerHandleErrorZ *val = (LDKCResult_CVec_u8ZPeerHandleErrorZ*)arg;
+       CHECK(!val->result_ok);
+       LDKPeerHandleError err_var = (*val->contents.err);
+       CHECK((((long)err_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&err_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long err_ref = (long)err_var.inner & ~1;
+       return err_ref;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1boolPeerHandleErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_boolPeerHandleErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1boolPeerHandleErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_boolPeerHandleErrorZ *val = (LDKCResult_boolPeerHandleErrorZ*)arg;
+       CHECK(val->result_ok);
+       return *val->contents.result;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1boolPeerHandleErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_boolPeerHandleErrorZ *val = (LDKCResult_boolPeerHandleErrorZ*)arg;
+       CHECK(!val->result_ok);
+       LDKPeerHandleError err_var = (*val->contents.err);
+       CHECK((((long)err_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&err_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long err_ref = (long)err_var.inner & ~1;
+       return err_ref;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1SecretKeySecpErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_SecretKeySecpErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKCResult_1SecretKeySecpErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_SecretKeySecpErrorZ *val = (LDKCResult_SecretKeySecpErrorZ*)arg;
+       CHECK(val->result_ok);
+       jbyteArray res_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, res_arr, 0, 32, (*val->contents.result).bytes);
+       return res_arr;
+}
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_LDKCResult_1SecretKeySecpErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_SecretKeySecpErrorZ *val = (LDKCResult_SecretKeySecpErrorZ*)arg;
+       CHECK(!val->result_ok);
+       jclass err_conv = LDKSecp256k1Error_to_java(_env, (*val->contents.err));
+       return err_conv;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1PublicKeySecpErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_PublicKeySecpErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_LDKCResult_1PublicKeySecpErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_PublicKeySecpErrorZ *val = (LDKCResult_PublicKeySecpErrorZ*)arg;
+       CHECK(val->result_ok);
+       jbyteArray res_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, res_arr, 0, 33, (*val->contents.result).compressed_form);
+       return res_arr;
+}
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_LDKCResult_1PublicKeySecpErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_PublicKeySecpErrorZ *val = (LDKCResult_PublicKeySecpErrorZ*)arg;
+       CHECK(!val->result_ok);
+       jclass err_conv = LDKSecp256k1Error_to_java(_env, (*val->contents.err));
+       return err_conv;
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1TxCreationKeysSecpErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_TxCreationKeysSecpErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1TxCreationKeysSecpErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_TxCreationKeysSecpErrorZ *val = (LDKCResult_TxCreationKeysSecpErrorZ*)arg;
+       CHECK(val->result_ok);
+       LDKTxCreationKeys res_var = (*val->contents.result);
+       CHECK((((long)res_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&res_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long res_ref = (long)res_var.inner & ~1;
+       return res_ref;
+}
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_LDKCResult_1TxCreationKeysSecpErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_TxCreationKeysSecpErrorZ *val = (LDKCResult_TxCreationKeysSecpErrorZ*)arg;
+       CHECK(!val->result_ok);
+       jclass err_conv = LDKSecp256k1Error_to_java(_env, (*val->contents.err));
+       return err_conv;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C2TupleTempl_1HTLCOutputInCommitment_1_1Signature_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_C2TupleTempl_HTLCOutputInCommitment__Signature *vec = (LDKCVecTempl_C2TupleTempl_HTLCOutputInCommitment__Signature*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKC2TupleTempl_HTLCOutputInCommitment__Signature));
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1C2TupleTempl_1HTLCOutputInCommitment_1_1Signature_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_C2TupleTempl_HTLCOutputInCommitment__Signature *ret = MALLOC(sizeof(LDKCVecTempl_C2TupleTempl_HTLCOutputInCommitment__Signature), "LDKCVecTempl_C2TupleTempl_HTLCOutputInCommitment__Signature");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKC2TupleTempl_HTLCOutputInCommitment__Signature) * ret->datalen, "LDKCVecTempl_C2TupleTempl_HTLCOutputInCommitment__Signature Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKC2TupleTempl_HTLCOutputInCommitment__Signature arr_elem_conv = *(LDKC2TupleTempl_HTLCOutputInCommitment__Signature*)arr_elem;
+                       FREE((void*)arr_elem);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1RouteHop_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_RouteHop *vec = (LDKCVecTempl_RouteHop*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1RouteHop_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_RouteHop *ret = MALLOC(sizeof(LDKCVecTempl_RouteHop), "LDKCVecTempl_RouteHop");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKRouteHop) * ret->datalen, "LDKCVecTempl_RouteHop Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKRouteHop arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = RouteHop_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
+JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1CVecTempl_1RouteHop_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_CVecTempl_RouteHop *vec = (LDKCVecTempl_CVecTempl_RouteHop*)ptr;
+       return (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(LDKCVecTempl_RouteHop));
+}
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_LDKCResult_1RouteLightningErrorZ_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {
+       return ((LDKCResult_RouteLightningErrorZ*)arg)->result_ok;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1RouteLightningErrorZ_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_RouteLightningErrorZ *val = (LDKCResult_RouteLightningErrorZ*)arg;
+       CHECK(val->result_ok);
+       LDKRoute res_var = (*val->contents.result);
+       CHECK((((long)res_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&res_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long res_ref = (long)res_var.inner & ~1;
+       return res_ref;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCResult_1RouteLightningErrorZ_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {
+       LDKCResult_RouteLightningErrorZ *val = (LDKCResult_RouteLightningErrorZ*)arg;
+       CHECK(!val->result_ok);
+       LDKLightningError err_var = (*val->contents.err);
+       CHECK((((long)err_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&err_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long err_ref = (long)err_var.inner & ~1;
+       return err_ref;
+}
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1RouteHint_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {
+       LDKCVecTempl_RouteHint *vec = (LDKCVecTempl_RouteHint*)ptr;
+       jlongArray ret = (*env)->NewLongArray(env, vec->datalen);
+       jlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);
+       for (size_t i = 0; i < vec->datalen; i++) {
+               CHECK((((long)vec->data[i].inner) & 1) == 0);
+               ret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);
+       }
+       (*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);
+       return ret;
+}
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKCVecTempl_1RouteHint_1new(JNIEnv *env, jclass _b, jlongArray elems){
+       LDKCVecTempl_RouteHint *ret = MALLOC(sizeof(LDKCVecTempl_RouteHint), "LDKCVecTempl_RouteHint");
+       ret->datalen = (*env)->GetArrayLength(env, elems);
+       if (ret->datalen == 0) {
+               ret->data = NULL;
+       } else {
+               ret->data = MALLOC(sizeof(LDKRouteHint) * ret->datalen, "LDKCVecTempl_RouteHint Data");
+               jlong *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);
+               for (size_t i = 0; i < ret->datalen; i++) {
+                       jlong arr_elem = java_elems[i];
+                       LDKRouteHint arr_elem_conv;
+                       arr_elem_conv.inner = (void*)(arr_elem & (~1));
+                       arr_elem_conv.is_owned = (arr_elem & 1) || (arr_elem == 0);
+                       if (arr_elem_conv.inner != NULL)
+                               arr_elem_conv = RouteHint_clone(&arr_elem_conv);
+                       ret->data[i] = arr_elem_conv;
+               }
+               (*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);
+       }
+       return (long)ret;
+}
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_C2Tuple_1HTLCOutputInCommitmentSignatureZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC2Tuple_HTLCOutputInCommitmentSignatureZ arg_conv = *(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ*)arg;
        FREE((void*)arg);
-       return C2Tuple_HTLCOutputInCommitmentSignatureZ_free(arg_conv);
+       C2Tuple_HTLCOutputInCommitmentSignatureZ_free(arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_C2Tuple_1OutPointScriptZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC2Tuple_OutPointScriptZ arg_conv = *(LDKC2Tuple_OutPointScriptZ*)arg;
        FREE((void*)arg);
-       return C2Tuple_OutPointScriptZ_free(arg_conv);
+       C2Tuple_OutPointScriptZ_free(arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_C2Tuple_1SignatureCVec_1SignatureZZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC2Tuple_SignatureCVec_SignatureZZ arg_conv = *(LDKC2Tuple_SignatureCVec_SignatureZZ*)arg;
        FREE((void*)arg);
-       return C2Tuple_SignatureCVec_SignatureZZ_free(arg_conv);
+       C2Tuple_SignatureCVec_SignatureZZ_free(arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_C2Tuple_1TxidCVec_1TxOutZZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC2Tuple_TxidCVec_TxOutZZ arg_conv = *(LDKC2Tuple_TxidCVec_TxOutZZ*)arg;
        FREE((void*)arg);
-       return C2Tuple_TxidCVec_TxOutZZ_free(arg_conv);
+       C2Tuple_TxidCVec_TxOutZZ_free(arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_C2Tuple_1u64u64Z_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC2Tuple_u64u64Z arg_conv = *(LDKC2Tuple_u64u64Z*)arg;
        FREE((void*)arg);
-       return C2Tuple_u64u64Z_free(arg_conv);
+       C2Tuple_u64u64Z_free(arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_C2Tuple_1usizeTransactionZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC2Tuple_usizeTransactionZ arg_conv = *(LDKC2Tuple_usizeTransactionZ*)arg;
        FREE((void*)arg);
-       return C2Tuple_usizeTransactionZ_free(arg_conv);
+       C2Tuple_usizeTransactionZ_free(arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_C3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ arg_conv = *(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ*)arg;
        FREE((void*)arg);
-       return C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_free(arg_conv);
+       C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_free(arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1C2Tuple_1SignatureCVec_1SignatureZZNoneZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ arg_conv = *(LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ*)arg;
        FREE((void*)arg);
-       return CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ_free(arg_conv);
+       CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1C2Tuple_1SignatureCVec_1SignatureZZNoneZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
        LDKC2Tuple_SignatureCVec_SignatureZZ arg_conv = *(LDKC2Tuple_SignatureCVec_SignatureZZ*)arg;
        FREE((void*)arg);
-       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ* ret = MALLOC(sizeof(LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ), "LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ");
-       *ret = CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ_ok(arg_conv);
-       return (long)ret;
+       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ), "LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ");
+       *ret_conv = CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ_ok(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1SignatureZNoneZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_CVec_SignatureZNoneZ arg_conv = *(LDKCResult_CVec_SignatureZNoneZ*)arg;
        FREE((void*)arg);
-       return CResult_CVec_SignatureZNoneZ_free(arg_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1SignatureZNoneZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_SignatureZ arg_conv = *(LDKCVec_SignatureZ*)arg;
-       FREE((void*)arg);
-       LDKCResult_CVec_SignatureZNoneZ* ret = MALLOC(sizeof(LDKCResult_CVec_SignatureZNoneZ), "LDKCResult_CVec_SignatureZNoneZ");
-       *ret = CResult_CVec_SignatureZNoneZ_ok(arg_conv);
-       return (long)ret;
+       CResult_CVec_SignatureZNoneZ_free(arg_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1SignatureZNoneZ_1ok(JNIEnv * _env, jclass _b, jobjectArray arg) {
+       LDKCVec_SignatureZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKSignature), "LDKCVec_SignatureZ Elements");
+       else
+               arg_constr.data = NULL;
+       for (size_t i = 0; i < arg_constr.datalen; i++) {
+               jobject arr_conv_8 = (*_env)->GetObjectArrayElement(_env, arg, i);
+               LDKSignature arr_conv_8_ref;
+               CHECK((*_env)->GetArrayLength (_env, arr_conv_8) == 64);
+               (*_env)->GetByteArrayRegion (_env, arr_conv_8, 0, 64, arr_conv_8_ref.compact_form);
+               arg_constr.data[i] = arr_conv_8_ref;
+       }
+       LDKCResult_CVec_SignatureZNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_CVec_SignatureZNoneZ), "LDKCResult_CVec_SignatureZNoneZ");
+       *ret_conv = CResult_CVec_SignatureZNoneZ_ok(arg_constr);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1u8ZPeerHandleErrorZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKPeerHandleError arg_conv = *(LDKPeerHandleError*)arg;
        FREE((void*)arg);
-       LDKCResult_CVec_u8ZPeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_CVec_u8ZPeerHandleErrorZ), "LDKCResult_CVec_u8ZPeerHandleErrorZ");
-       *ret = CResult_CVec_u8ZPeerHandleErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_CVec_u8ZPeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_CVec_u8ZPeerHandleErrorZ), "LDKCResult_CVec_u8ZPeerHandleErrorZ");
+       *ret_conv = CResult_CVec_u8ZPeerHandleErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1u8ZPeerHandleErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_CVec_u8ZPeerHandleErrorZ arg_conv = *(LDKCResult_CVec_u8ZPeerHandleErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_CVec_u8ZPeerHandleErrorZ_free(arg_conv);
+       CResult_CVec_u8ZPeerHandleErrorZ_free(arg_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1u8ZPeerHandleErrorZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_u8Z arg_conv = *(LDKCVec_u8Z*)arg;
-       FREE((void*)arg);
-       LDKCResult_CVec_u8ZPeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_CVec_u8ZPeerHandleErrorZ), "LDKCResult_CVec_u8ZPeerHandleErrorZ");
-       *ret = CResult_CVec_u8ZPeerHandleErrorZ_ok(arg_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1u8ZPeerHandleErrorZ_1ok(JNIEnv * _env, jclass _b, jbyteArray arg) {
+       LDKCVec_u8Z arg_ref;
+       arg_ref.data = (*_env)->GetByteArrayElements (_env, arg, NULL);
+       arg_ref.datalen = (*_env)->GetArrayLength (_env, arg);
+       LDKCResult_CVec_u8ZPeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_CVec_u8ZPeerHandleErrorZ), "LDKCResult_CVec_u8ZPeerHandleErrorZ");
+       *ret_conv = CResult_CVec_u8ZPeerHandleErrorZ_ok(arg_ref);
+       (*_env)->ReleaseByteArrayElements(_env, arg, (int8_t*)arg_ref.data, 0);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneAPIErrorZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKAPIError arg_conv = *(LDKAPIError*)arg;
        FREE((void*)arg);
-       LDKCResult_NoneAPIErrorZ* ret = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
-       *ret = CResult_NoneAPIErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_NoneAPIErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
+       *ret_conv = CResult_NoneAPIErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1NoneAPIErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_NoneAPIErrorZ arg_conv = *(LDKCResult_NoneAPIErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_NoneAPIErrorZ_free(arg_conv);
+       CResult_NoneAPIErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneChannelMonitorUpdateErrZ_1err(JNIEnv * _env, jclass _b, jclass arg) {
        LDKChannelMonitorUpdateErr arg_conv = *(LDKChannelMonitorUpdateErr*)arg;
        FREE((void*)arg);
-       LDKCResult_NoneChannelMonitorUpdateErrZ* ret = MALLOC(sizeof(LDKCResult_NoneChannelMonitorUpdateErrZ), "LDKCResult_NoneChannelMonitorUpdateErrZ");
-       *ret = CResult_NoneChannelMonitorUpdateErrZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_NoneChannelMonitorUpdateErrZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneChannelMonitorUpdateErrZ), "LDKCResult_NoneChannelMonitorUpdateErrZ");
+       *ret_conv = CResult_NoneChannelMonitorUpdateErrZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1NoneChannelMonitorUpdateErrZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_NoneChannelMonitorUpdateErrZ arg_conv = *(LDKCResult_NoneChannelMonitorUpdateErrZ*)arg;
        FREE((void*)arg);
-       return CResult_NoneChannelMonitorUpdateErrZ_free(arg_conv);
+       CResult_NoneChannelMonitorUpdateErrZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneMonitorUpdateErrorZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKMonitorUpdateError arg_conv = *(LDKMonitorUpdateError*)arg;
        FREE((void*)arg);
-       LDKCResult_NoneMonitorUpdateErrorZ* ret = MALLOC(sizeof(LDKCResult_NoneMonitorUpdateErrorZ), "LDKCResult_NoneMonitorUpdateErrorZ");
-       *ret = CResult_NoneMonitorUpdateErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_NoneMonitorUpdateErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneMonitorUpdateErrorZ), "LDKCResult_NoneMonitorUpdateErrorZ");
+       *ret_conv = CResult_NoneMonitorUpdateErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1NoneMonitorUpdateErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_NoneMonitorUpdateErrorZ arg_conv = *(LDKCResult_NoneMonitorUpdateErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_NoneMonitorUpdateErrorZ_free(arg_conv);
+       CResult_NoneMonitorUpdateErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NonePaymentSendFailureZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKPaymentSendFailure arg_conv = *(LDKPaymentSendFailure*)arg;
        FREE((void*)arg);
-       LDKCResult_NonePaymentSendFailureZ* ret = MALLOC(sizeof(LDKCResult_NonePaymentSendFailureZ), "LDKCResult_NonePaymentSendFailureZ");
-       *ret = CResult_NonePaymentSendFailureZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_NonePaymentSendFailureZ* ret_conv = MALLOC(sizeof(LDKCResult_NonePaymentSendFailureZ), "LDKCResult_NonePaymentSendFailureZ");
+       *ret_conv = CResult_NonePaymentSendFailureZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1NonePaymentSendFailureZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_NonePaymentSendFailureZ arg_conv = *(LDKCResult_NonePaymentSendFailureZ*)arg;
        FREE((void*)arg);
-       return CResult_NonePaymentSendFailureZ_free(arg_conv);
+       CResult_NonePaymentSendFailureZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NonePeerHandleErrorZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKPeerHandleError arg_conv = *(LDKPeerHandleError*)arg;
        FREE((void*)arg);
-       LDKCResult_NonePeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
-       *ret = CResult_NonePeerHandleErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_NonePeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
+       *ret_conv = CResult_NonePeerHandleErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1NonePeerHandleErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_NonePeerHandleErrorZ arg_conv = *(LDKCResult_NonePeerHandleErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_NonePeerHandleErrorZ_free(arg_conv);
+       CResult_NonePeerHandleErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1PublicKeySecpErrorZ_1err(JNIEnv * _env, jclass _b, jclass arg) {
        LDKSecp256k1Error arg_conv = *(LDKSecp256k1Error*)arg;
        FREE((void*)arg);
-       LDKCResult_PublicKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
-       *ret = CResult_PublicKeySecpErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_PublicKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
+       *ret_conv = CResult_PublicKeySecpErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1PublicKeySecpErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_PublicKeySecpErrorZ arg_conv = *(LDKCResult_PublicKeySecpErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_PublicKeySecpErrorZ_free(arg_conv);
+       CResult_PublicKeySecpErrorZ_free(arg_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1PublicKeySecpErrorZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKPublicKey arg_conv = *(LDKPublicKey*)arg;
-       FREE((void*)arg);
-       LDKCResult_PublicKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
-       *ret = CResult_PublicKeySecpErrorZ_ok(arg_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1PublicKeySecpErrorZ_1ok(JNIEnv * _env, jclass _b, jbyteArray arg) {
+       LDKPublicKey arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 33, arg_ref.compressed_form);
+       LDKCResult_PublicKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
+       *ret_conv = CResult_PublicKeySecpErrorZ_ok(arg_ref);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1RouteLightningErrorZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKLightningError arg_conv = *(LDKLightningError*)arg;
        FREE((void*)arg);
-       LDKCResult_RouteLightningErrorZ* ret = MALLOC(sizeof(LDKCResult_RouteLightningErrorZ), "LDKCResult_RouteLightningErrorZ");
-       *ret = CResult_RouteLightningErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_RouteLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_RouteLightningErrorZ), "LDKCResult_RouteLightningErrorZ");
+       *ret_conv = CResult_RouteLightningErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1RouteLightningErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_RouteLightningErrorZ arg_conv = *(LDKCResult_RouteLightningErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_RouteLightningErrorZ_free(arg_conv);
+       CResult_RouteLightningErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1RouteLightningErrorZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
        LDKRoute arg_conv = *(LDKRoute*)arg;
        FREE((void*)arg);
-       LDKCResult_RouteLightningErrorZ* ret = MALLOC(sizeof(LDKCResult_RouteLightningErrorZ), "LDKCResult_RouteLightningErrorZ");
-       *ret = CResult_RouteLightningErrorZ_ok(arg_conv);
-       return (long)ret;
+       LDKCResult_RouteLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_RouteLightningErrorZ), "LDKCResult_RouteLightningErrorZ");
+       *ret_conv = CResult_RouteLightningErrorZ_ok(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1SecretKeySecpErrorZ_1err(JNIEnv * _env, jclass _b, jclass arg) {
        LDKSecp256k1Error arg_conv = *(LDKSecp256k1Error*)arg;
        FREE((void*)arg);
-       LDKCResult_SecretKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
-       *ret = CResult_SecretKeySecpErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_SecretKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
+       *ret_conv = CResult_SecretKeySecpErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1SecretKeySecpErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_SecretKeySecpErrorZ arg_conv = *(LDKCResult_SecretKeySecpErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_SecretKeySecpErrorZ_free(arg_conv);
+       CResult_SecretKeySecpErrorZ_free(arg_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1SecretKeySecpErrorZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKSecretKey arg_conv = *(LDKSecretKey*)arg;
-       FREE((void*)arg);
-       LDKCResult_SecretKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
-       *ret = CResult_SecretKeySecpErrorZ_ok(arg_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1SecretKeySecpErrorZ_1ok(JNIEnv * _env, jclass _b, jbyteArray arg) {
+       LDKSecretKey arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 32, arg_ref.bytes);
+       LDKCResult_SecretKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
+       *ret_conv = CResult_SecretKeySecpErrorZ_ok(arg_ref);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1SignatureNoneZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_SignatureNoneZ arg_conv = *(LDKCResult_SignatureNoneZ*)arg;
        FREE((void*)arg);
-       return CResult_SignatureNoneZ_free(arg_conv);
+       CResult_SignatureNoneZ_free(arg_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1SignatureNoneZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKSignature arg_conv = *(LDKSignature*)arg;
-       FREE((void*)arg);
-       LDKCResult_SignatureNoneZ* ret = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
-       *ret = CResult_SignatureNoneZ_ok(arg_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1SignatureNoneZ_1ok(JNIEnv * _env, jclass _b, jbyteArray arg) {
+       LDKSignature arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, arg, 0, 64, arg_ref.compact_form);
+       LDKCResult_SignatureNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
+       *ret_conv = CResult_SignatureNoneZ_ok(arg_ref);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1TxCreationKeysSecpErrorZ_1err(JNIEnv * _env, jclass _b, jclass arg) {
        LDKSecp256k1Error arg_conv = *(LDKSecp256k1Error*)arg;
        FREE((void*)arg);
-       LDKCResult_TxCreationKeysSecpErrorZ* ret = MALLOC(sizeof(LDKCResult_TxCreationKeysSecpErrorZ), "LDKCResult_TxCreationKeysSecpErrorZ");
-       *ret = CResult_TxCreationKeysSecpErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_TxCreationKeysSecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_TxCreationKeysSecpErrorZ), "LDKCResult_TxCreationKeysSecpErrorZ");
+       *ret_conv = CResult_TxCreationKeysSecpErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1TxCreationKeysSecpErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_TxCreationKeysSecpErrorZ arg_conv = *(LDKCResult_TxCreationKeysSecpErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_TxCreationKeysSecpErrorZ_free(arg_conv);
+       CResult_TxCreationKeysSecpErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1TxCreationKeysSecpErrorZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
        LDKTxCreationKeys arg_conv = *(LDKTxCreationKeys*)arg;
        FREE((void*)arg);
-       LDKCResult_TxCreationKeysSecpErrorZ* ret = MALLOC(sizeof(LDKCResult_TxCreationKeysSecpErrorZ), "LDKCResult_TxCreationKeysSecpErrorZ");
-       *ret = CResult_TxCreationKeysSecpErrorZ_ok(arg_conv);
-       return (long)ret;
+       LDKCResult_TxCreationKeysSecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_TxCreationKeysSecpErrorZ), "LDKCResult_TxCreationKeysSecpErrorZ");
+       *ret_conv = CResult_TxCreationKeysSecpErrorZ_ok(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1TxOutAccessErrorZ_1err(JNIEnv * _env, jclass _b, jclass arg) {
        LDKAccessError arg_conv = *(LDKAccessError*)arg;
        FREE((void*)arg);
-       LDKCResult_TxOutAccessErrorZ* ret = MALLOC(sizeof(LDKCResult_TxOutAccessErrorZ), "LDKCResult_TxOutAccessErrorZ");
-       *ret = CResult_TxOutAccessErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_TxOutAccessErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_TxOutAccessErrorZ), "LDKCResult_TxOutAccessErrorZ");
+       *ret_conv = CResult_TxOutAccessErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1TxOutAccessErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_TxOutAccessErrorZ arg_conv = *(LDKCResult_TxOutAccessErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_TxOutAccessErrorZ_free(arg_conv);
+       CResult_TxOutAccessErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1TxOutAccessErrorZ_1ok(JNIEnv * _env, jclass _b, jlong arg) {
        LDKTxOut arg_conv = *(LDKTxOut*)arg;
        FREE((void*)arg);
-       LDKCResult_TxOutAccessErrorZ* ret = MALLOC(sizeof(LDKCResult_TxOutAccessErrorZ), "LDKCResult_TxOutAccessErrorZ");
-       *ret = CResult_TxOutAccessErrorZ_ok(arg_conv);
-       return (long)ret;
+       LDKCResult_TxOutAccessErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_TxOutAccessErrorZ), "LDKCResult_TxOutAccessErrorZ");
+       *ret_conv = CResult_TxOutAccessErrorZ_ok(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1boolLightningErrorZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKLightningError arg_conv = *(LDKLightningError*)arg;
        FREE((void*)arg);
-       LDKCResult_boolLightningErrorZ* ret = MALLOC(sizeof(LDKCResult_boolLightningErrorZ), "LDKCResult_boolLightningErrorZ");
-       *ret = CResult_boolLightningErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_boolLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolLightningErrorZ), "LDKCResult_boolLightningErrorZ");
+       *ret_conv = CResult_boolLightningErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1boolLightningErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_boolLightningErrorZ arg_conv = *(LDKCResult_boolLightningErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_boolLightningErrorZ_free(arg_conv);
+       CResult_boolLightningErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1boolLightningErrorZ_1ok(JNIEnv * _env, jclass _b, jboolean arg) {
-       LDKCResult_boolLightningErrorZ* ret = MALLOC(sizeof(LDKCResult_boolLightningErrorZ), "LDKCResult_boolLightningErrorZ");
-       *ret = CResult_boolLightningErrorZ_ok(arg);
-       return (long)ret;
+       LDKCResult_boolLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolLightningErrorZ), "LDKCResult_boolLightningErrorZ");
+       *ret_conv = CResult_boolLightningErrorZ_ok(arg);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1boolPeerHandleErrorZ_1err(JNIEnv * _env, jclass _b, jlong arg) {
        LDKPeerHandleError arg_conv = *(LDKPeerHandleError*)arg;
        FREE((void*)arg);
-       LDKCResult_boolPeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_boolPeerHandleErrorZ), "LDKCResult_boolPeerHandleErrorZ");
-       *ret = CResult_boolPeerHandleErrorZ_err(arg_conv);
-       return (long)ret;
+       LDKCResult_boolPeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolPeerHandleErrorZ), "LDKCResult_boolPeerHandleErrorZ");
+       *ret_conv = CResult_boolPeerHandleErrorZ_err(arg_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CResult_1boolPeerHandleErrorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
        LDKCResult_boolPeerHandleErrorZ arg_conv = *(LDKCResult_boolPeerHandleErrorZ*)arg;
        FREE((void*)arg);
-       return CResult_boolPeerHandleErrorZ_free(arg_conv);
+       CResult_boolPeerHandleErrorZ_free(arg_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1boolPeerHandleErrorZ_1ok(JNIEnv * _env, jclass _b, jboolean arg) {
-       LDKCResult_boolPeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_boolPeerHandleErrorZ), "LDKCResult_boolPeerHandleErrorZ");
-       *ret = CResult_boolPeerHandleErrorZ_ok(arg);
-       return (long)ret;
+       LDKCResult_boolPeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolPeerHandleErrorZ), "LDKCResult_boolPeerHandleErrorZ");
+       *ret_conv = CResult_boolPeerHandleErrorZ_ok(arg);
+       return (long)ret_conv;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C2Tuple_1HTLCOutputInCommitmentSignatureZZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ), "LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t q = 0; q < arg_constr.datalen; q++) {
+               long arr_conv_42 = arg_vals[q];
+               LDKC2Tuple_HTLCOutputInCommitmentSignatureZ arr_conv_42_conv = *(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ*)arr_conv_42;
+               FREE((void*)arr_conv_42);
+               arg_constr.data[q] = arr_conv_42_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C2Tuple_1TxidCVec_1TxOutZZZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_C2Tuple_TxidCVec_TxOutZZZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKC2Tuple_TxidCVec_TxOutZZ), "LDKCVec_C2Tuple_TxidCVec_TxOutZZZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t b = 0; b < arg_constr.datalen; b++) {
+               long arr_conv_27 = arg_vals[b];
+               LDKC2Tuple_TxidCVec_TxOutZZ arr_conv_27_conv = *(LDKC2Tuple_TxidCVec_TxOutZZ*)arr_conv_27;
+               FREE((void*)arr_conv_27);
+               arg_constr.data[b] = arr_conv_27_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_C2Tuple_TxidCVec_TxOutZZZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C2Tuple_1usizeTransactionZZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_C2Tuple_usizeTransactionZZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKC2Tuple_usizeTransactionZ), "LDKCVec_C2Tuple_usizeTransactionZZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t d = 0; d < arg_constr.datalen; d++) {
+               long arr_conv_29 = arg_vals[d];
+               LDKC2Tuple_usizeTransactionZ arr_conv_29_conv = *(LDKC2Tuple_usizeTransactionZ*)arr_conv_29;
+               FREE((void*)arr_conv_29);
+               arg_constr.data[d] = arr_conv_29_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_C2Tuple_usizeTransactionZZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ), "LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t l = 0; l < arg_constr.datalen; l++) {
+               long arr_conv_63 = arg_vals[l];
+               LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ arr_conv_63_conv = *(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ*)arr_conv_63;
+               FREE((void*)arr_conv_63);
+               arg_constr.data[l] = arr_conv_63_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1CVec_1RouteHopZZ_1free(JNIEnv * _env, jclass _b, jobjectArray arg) {
+       LDKCVec_CVec_RouteHopZZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKCVec_RouteHopZ), "LDKCVec_CVec_RouteHopZZ Elements");
+       else
+               arg_constr.data = NULL;
+       for (size_t m = 0; m < arg_constr.datalen; m++) {
+               jobject arr_conv_12 = (*_env)->GetObjectArrayElement(_env, arg, m);
+               LDKCVec_RouteHopZ arr_conv_12_constr;
+               arr_conv_12_constr.datalen = (*_env)->GetArrayLength (_env, arr_conv_12);
+               if (arr_conv_12_constr.datalen > 0)
+                       arr_conv_12_constr.data = MALLOC(arr_conv_12_constr.datalen * sizeof(LDKRouteHop), "LDKCVec_RouteHopZ Elements");
+               else
+                       arr_conv_12_constr.data = NULL;
+               long* arr_conv_12_vals = (*_env)->GetLongArrayElements (_env, arr_conv_12, NULL);
+               for (size_t k = 0; k < arr_conv_12_constr.datalen; k++) {
+                       long arr_conv_10 = arr_conv_12_vals[k];
+                       LDKRouteHop arr_conv_10_conv;
+                       arr_conv_10_conv.inner = (void*)(arr_conv_10 & (~1));
+                       arr_conv_10_conv.is_owned = (arr_conv_10 & 1) || (arr_conv_10 == 0);
+                       arr_conv_12_constr.data[k] = arr_conv_10_conv;
+               }
+               (*_env)->ReleaseLongArrayElements (_env, arr_conv_12, arr_conv_12_vals, 0);
+               arg_constr.data[m] = arr_conv_12_constr;
+       }
+       CVec_CVec_RouteHopZZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1ChannelDetailsZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_ChannelDetailsZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKChannelDetails), "LDKCVec_ChannelDetailsZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t q = 0; q < arg_constr.datalen; q++) {
+               long arr_conv_16 = arg_vals[q];
+               LDKChannelDetails arr_conv_16_conv;
+               arr_conv_16_conv.inner = (void*)(arr_conv_16 & (~1));
+               arr_conv_16_conv.is_owned = (arr_conv_16 & 1) || (arr_conv_16 == 0);
+               arg_constr.data[q] = arr_conv_16_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_ChannelDetailsZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1ChannelMonitorZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_ChannelMonitorZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKChannelMonitor), "LDKCVec_ChannelMonitorZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t q = 0; q < arg_constr.datalen; q++) {
+               long arr_conv_16 = arg_vals[q];
+               LDKChannelMonitor arr_conv_16_conv;
+               arr_conv_16_conv.inner = (void*)(arr_conv_16 & (~1));
+               arr_conv_16_conv.is_owned = (arr_conv_16 & 1) || (arr_conv_16 == 0);
+               arg_constr.data[q] = arr_conv_16_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_ChannelMonitorZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1EventZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_EventZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKEvent), "LDKCVec_EventZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t h = 0; h < arg_constr.datalen; h++) {
+               long arr_conv_7 = arg_vals[h];
+               LDKEvent arr_conv_7_conv = *(LDKEvent*)arr_conv_7;
+               FREE((void*)arr_conv_7);
+               arg_constr.data[h] = arr_conv_7_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_EventZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1HTLCOutputInCommitmentZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_HTLCOutputInCommitmentZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKHTLCOutputInCommitment), "LDKCVec_HTLCOutputInCommitmentZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t y = 0; y < arg_constr.datalen; y++) {
+               long arr_conv_24 = arg_vals[y];
+               LDKHTLCOutputInCommitment arr_conv_24_conv;
+               arr_conv_24_conv.inner = (void*)(arr_conv_24 & (~1));
+               arr_conv_24_conv.is_owned = (arr_conv_24 & 1) || (arr_conv_24 == 0);
+               arg_constr.data[y] = arr_conv_24_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_HTLCOutputInCommitmentZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1MessageSendEventZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_MessageSendEventZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKMessageSendEvent), "LDKCVec_MessageSendEventZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t s = 0; s < arg_constr.datalen; s++) {
+               long arr_conv_18 = arg_vals[s];
+               LDKMessageSendEvent arr_conv_18_conv = *(LDKMessageSendEvent*)arr_conv_18;
+               FREE((void*)arr_conv_18);
+               arg_constr.data[s] = arr_conv_18_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_MessageSendEventZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1MonitorEventZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_MonitorEventZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKMonitorEvent), "LDKCVec_MonitorEventZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t o = 0; o < arg_constr.datalen; o++) {
+               long arr_conv_14 = arg_vals[o];
+               LDKMonitorEvent arr_conv_14_conv;
+               arr_conv_14_conv.inner = (void*)(arr_conv_14 & (~1));
+               arr_conv_14_conv.is_owned = (arr_conv_14 & 1) || (arr_conv_14 == 0);
+               arg_constr.data[o] = arr_conv_14_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_MonitorEventZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1NetAddressZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_NetAddressZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKNetAddress), "LDKCVec_NetAddressZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t m = 0; m < arg_constr.datalen; m++) {
+               long arr_conv_12 = arg_vals[m];
+               LDKNetAddress arr_conv_12_conv = *(LDKNetAddress*)arr_conv_12;
+               FREE((void*)arr_conv_12);
+               arg_constr.data[m] = arr_conv_12_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_NetAddressZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1NodeAnnouncementZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_NodeAnnouncementZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKNodeAnnouncement), "LDKCVec_NodeAnnouncementZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t s = 0; s < arg_constr.datalen; s++) {
+               long arr_conv_18 = arg_vals[s];
+               LDKNodeAnnouncement arr_conv_18_conv;
+               arr_conv_18_conv.inner = (void*)(arr_conv_18 & (~1));
+               arr_conv_18_conv.is_owned = (arr_conv_18 & 1) || (arr_conv_18 == 0);
+               arg_constr.data[s] = arr_conv_18_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_NodeAnnouncementZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1PublicKeyZ_1free(JNIEnv * _env, jclass _b, jobjectArray arg) {
+       LDKCVec_PublicKeyZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKPublicKey), "LDKCVec_PublicKeyZ Elements");
+       else
+               arg_constr.data = NULL;
+       for (size_t i = 0; i < arg_constr.datalen; i++) {
+               jobject arr_conv_8 = (*_env)->GetObjectArrayElement(_env, arg, i);
+               LDKPublicKey arr_conv_8_ref;
+               CHECK((*_env)->GetArrayLength (_env, arr_conv_8) == 33);
+               (*_env)->GetByteArrayRegion (_env, arr_conv_8, 0, 33, arr_conv_8_ref.compressed_form);
+               arg_constr.data[i] = arr_conv_8_ref;
+       }
+       CVec_PublicKeyZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1RouteHintZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_RouteHintZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKRouteHint), "LDKCVec_RouteHintZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t l = 0; l < arg_constr.datalen; l++) {
+               long arr_conv_11 = arg_vals[l];
+               LDKRouteHint arr_conv_11_conv;
+               arr_conv_11_conv.inner = (void*)(arr_conv_11 & (~1));
+               arr_conv_11_conv.is_owned = (arr_conv_11 & 1) || (arr_conv_11 == 0);
+               arg_constr.data[l] = arr_conv_11_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_RouteHintZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1RouteHopZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_RouteHopZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKRouteHop), "LDKCVec_RouteHopZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t k = 0; k < arg_constr.datalen; k++) {
+               long arr_conv_10 = arg_vals[k];
+               LDKRouteHop arr_conv_10_conv;
+               arr_conv_10_conv.inner = (void*)(arr_conv_10 & (~1));
+               arr_conv_10_conv.is_owned = (arr_conv_10 & 1) || (arr_conv_10 == 0);
+               arg_constr.data[k] = arr_conv_10_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_RouteHopZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1SignatureZ_1free(JNIEnv * _env, jclass _b, jobjectArray arg) {
+       LDKCVec_SignatureZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKSignature), "LDKCVec_SignatureZ Elements");
+       else
+               arg_constr.data = NULL;
+       for (size_t i = 0; i < arg_constr.datalen; i++) {
+               jobject arr_conv_8 = (*_env)->GetObjectArrayElement(_env, arg, i);
+               LDKSignature arr_conv_8_ref;
+               CHECK((*_env)->GetArrayLength (_env, arr_conv_8) == 64);
+               (*_env)->GetByteArrayRegion (_env, arr_conv_8, 0, 64, arr_conv_8_ref.compact_form);
+               arg_constr.data[i] = arr_conv_8_ref;
+       }
+       CVec_SignatureZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1SpendableOutputDescriptorZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_SpendableOutputDescriptorZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKSpendableOutputDescriptor), "LDKCVec_SpendableOutputDescriptorZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t b = 0; b < arg_constr.datalen; b++) {
+               long arr_conv_27 = arg_vals[b];
+               LDKSpendableOutputDescriptor arr_conv_27_conv = *(LDKSpendableOutputDescriptor*)arr_conv_27;
+               FREE((void*)arr_conv_27);
+               arg_constr.data[b] = arr_conv_27_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_SpendableOutputDescriptorZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1TransactionZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_TransactionZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKTransaction), "LDKCVec_TransactionZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t n = 0; n < arg_constr.datalen; n++) {
+               long arr_conv_13 = arg_vals[n];
+               LDKTransaction arr_conv_13_conv = *(LDKTransaction*)arr_conv_13;
+               arg_constr.data[n] = arr_conv_13_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_TransactionZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1TxOutZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_TxOutZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKTxOut), "LDKCVec_TxOutZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t h = 0; h < arg_constr.datalen; h++) {
+               long arr_conv_7 = arg_vals[h];
+               LDKTxOut arr_conv_7_conv = *(LDKTxOut*)arr_conv_7;
+               FREE((void*)arr_conv_7);
+               arg_constr.data[h] = arr_conv_7_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_TxOutZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateAddHTLCZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_UpdateAddHTLCZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKUpdateAddHTLC), "LDKCVec_UpdateAddHTLCZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t p = 0; p < arg_constr.datalen; p++) {
+               long arr_conv_15 = arg_vals[p];
+               LDKUpdateAddHTLC arr_conv_15_conv;
+               arr_conv_15_conv.inner = (void*)(arr_conv_15 & (~1));
+               arr_conv_15_conv.is_owned = (arr_conv_15 & 1) || (arr_conv_15 == 0);
+               arg_constr.data[p] = arr_conv_15_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_UpdateAddHTLCZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateFailHTLCZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_UpdateFailHTLCZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKUpdateFailHTLC), "LDKCVec_UpdateFailHTLCZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t q = 0; q < arg_constr.datalen; q++) {
+               long arr_conv_16 = arg_vals[q];
+               LDKUpdateFailHTLC arr_conv_16_conv;
+               arr_conv_16_conv.inner = (void*)(arr_conv_16 & (~1));
+               arr_conv_16_conv.is_owned = (arr_conv_16 & 1) || (arr_conv_16 == 0);
+               arg_constr.data[q] = arr_conv_16_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_UpdateFailHTLCZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateFailMalformedHTLCZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_UpdateFailMalformedHTLCZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKUpdateFailMalformedHTLC), "LDKCVec_UpdateFailMalformedHTLCZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t z = 0; z < arg_constr.datalen; z++) {
+               long arr_conv_25 = arg_vals[z];
+               LDKUpdateFailMalformedHTLC arr_conv_25_conv;
+               arr_conv_25_conv.inner = (void*)(arr_conv_25 & (~1));
+               arr_conv_25_conv.is_owned = (arr_conv_25 & 1) || (arr_conv_25 == 0);
+               arg_constr.data[z] = arr_conv_25_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_UpdateFailMalformedHTLCZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateFulfillHTLCZ_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_UpdateFulfillHTLCZ arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(LDKUpdateFulfillHTLC), "LDKCVec_UpdateFulfillHTLCZ Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t t = 0; t < arg_constr.datalen; t++) {
+               long arr_conv_19 = arg_vals[t];
+               LDKUpdateFulfillHTLC arr_conv_19_conv;
+               arr_conv_19_conv.inner = (void*)(arr_conv_19 & (~1));
+               arr_conv_19_conv.is_owned = (arr_conv_19 & 1) || (arr_conv_19 == 0);
+               arg_constr.data[t] = arr_conv_19_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_UpdateFulfillHTLCZ_free(arg_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1u64Z_1free(JNIEnv * _env, jclass _b, jlongArray arg) {
+       LDKCVec_u64Z arg_constr;
+       arg_constr.datalen = (*_env)->GetArrayLength (_env, arg);
+       if (arg_constr.datalen > 0)
+               arg_constr.data = MALLOC(arg_constr.datalen * sizeof(jlong), "LDKCVec_u64Z Elements");
+       else
+               arg_constr.data = NULL;
+       long* arg_vals = (*_env)->GetLongArrayElements (_env, arg, NULL);
+       for (size_t g = 0; g < arg_constr.datalen; g++) {
+               long arr_conv_6 = arg_vals[g];
+               arg_constr.data[g] = arr_conv_6;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, arg, arg_vals, 0);
+       CVec_u64Z_free(arg_constr);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C2Tuple_1HTLCOutputInCommitmentSignatureZZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ arg_conv = *(LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ*)arg;
-       FREE((void*)arg);
-       return CVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1u8Z_1free(JNIEnv * _env, jclass _b, jbyteArray arg) {
+       LDKCVec_u8Z arg_ref;
+       arg_ref.data = (*_env)->GetByteArrayElements (_env, arg, NULL);
+       arg_ref.datalen = (*_env)->GetArrayLength (_env, arg);
+       CVec_u8Z_free(arg_ref);
+       (*_env)->ReleaseByteArrayElements(_env, arg, (int8_t*)arg_ref.data, 0);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C2Tuple_1TxidCVec_1TxOutZZZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_C2Tuple_TxidCVec_TxOutZZZ arg_conv = *(LDKCVec_C2Tuple_TxidCVec_TxOutZZZ*)arg;
-       FREE((void*)arg);
-       return CVec_C2Tuple_TxidCVec_TxOutZZZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Transaction_1free(JNIEnv * _env, jclass _b, jlong _res) {
+       LDKTransaction _res_conv = *(LDKTransaction*)_res;
+       Transaction_free(_res_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C2Tuple_1usizeTransactionZZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_C2Tuple_usizeTransactionZZ arg_conv = *(LDKCVec_C2Tuple_usizeTransactionZZ*)arg;
-       FREE((void*)arg);
-       return CVec_C2Tuple_usizeTransactionZZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxOut_1free(JNIEnv * _env, jclass _b, jlong _res) {
+       LDKTxOut _res_conv = *(LDKTxOut*)_res;
+       FREE((void*)_res);
+       TxOut_free(_res_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1C3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ arg_conv = *(LDKCVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ*)arg;
-       FREE((void*)arg);
-       return CVec_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1usizeTransactionZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
+       LDKTransaction b_conv = *(LDKTransaction*)b;
+       LDKC2Tuple_usizeTransactionZ* ret_ref = MALLOC(sizeof(LDKC2Tuple_usizeTransactionZ), "LDKC2Tuple_usizeTransactionZ");
+       *ret_ref = C2Tuple_usizeTransactionZ_new(a, b_conv);
+       return (long)ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1CVec_1RouteHopZZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_CVec_RouteHopZZ arg_conv = *(LDKCVec_CVec_RouteHopZZ*)arg;
-       FREE((void*)arg);
-       return CVec_CVec_RouteHopZZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneChannelMonitorUpdateErrZ_1ok(JNIEnv * _env, jclass _b) {
+       LDKCResult_NoneChannelMonitorUpdateErrZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneChannelMonitorUpdateErrZ), "LDKCResult_NoneChannelMonitorUpdateErrZ");
+       *ret_conv = CResult_NoneChannelMonitorUpdateErrZ_ok();
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1ChannelDetailsZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_ChannelDetailsZ arg_conv = *(LDKCVec_ChannelDetailsZ*)arg;
-       FREE((void*)arg);
-       return CVec_ChannelDetailsZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneMonitorUpdateErrorZ_1ok(JNIEnv * _env, jclass _b) {
+       LDKCResult_NoneMonitorUpdateErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneMonitorUpdateErrorZ), "LDKCResult_NoneMonitorUpdateErrorZ");
+       *ret_conv = CResult_NoneMonitorUpdateErrorZ_ok();
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1OutPointScriptZ_1new(JNIEnv * _env, jclass _b, jlong a, jbyteArray b) {
+       LDKOutPoint a_conv;
+       a_conv.inner = (void*)(a & (~1));
+       a_conv.is_owned = (a & 1) || (a == 0);
+       if (a_conv.inner != NULL)
+               a_conv = OutPoint_clone(&a_conv);
+       LDKCVec_u8Z b_ref;
+       b_ref.data = (*_env)->GetByteArrayElements (_env, b, NULL);
+       b_ref.datalen = (*_env)->GetArrayLength (_env, b);
+       LDKC2Tuple_OutPointScriptZ* ret_ref = MALLOC(sizeof(LDKC2Tuple_OutPointScriptZ), "LDKC2Tuple_OutPointScriptZ");
+       *ret_ref = C2Tuple_OutPointScriptZ_new(a_conv, b_ref);
+       (*_env)->ReleaseByteArrayElements(_env, b, (int8_t*)b_ref.data, 0);
+       return (long)ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1TxidCVec_1TxOutZZ_1new(JNIEnv * _env, jclass _b, jbyteArray a, jlongArray b) {
+       LDKThirtyTwoBytes a_ref;
+       CHECK((*_env)->GetArrayLength (_env, a) == 32);
+       (*_env)->GetByteArrayRegion (_env, a, 0, 32, a_ref.data);
+       LDKCVec_TxOutZ b_constr;
+       b_constr.datalen = (*_env)->GetArrayLength (_env, b);
+       if (b_constr.datalen > 0)
+               b_constr.data = MALLOC(b_constr.datalen * sizeof(LDKTxOut), "LDKCVec_TxOutZ Elements");
+       else
+               b_constr.data = NULL;
+       long* b_vals = (*_env)->GetLongArrayElements (_env, b, NULL);
+       for (size_t h = 0; h < b_constr.datalen; h++) {
+               long arr_conv_7 = b_vals[h];
+               LDKTxOut arr_conv_7_conv = *(LDKTxOut*)arr_conv_7;
+               FREE((void*)arr_conv_7);
+               b_constr.data[h] = arr_conv_7_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, b, b_vals, 0);
+       LDKC2Tuple_TxidCVec_TxOutZZ* ret_ref = MALLOC(sizeof(LDKC2Tuple_TxidCVec_TxOutZZ), "LDKC2Tuple_TxidCVec_TxOutZZ");
+       *ret_ref = C2Tuple_TxidCVec_TxOutZZ_new(a_ref, b_constr);
+       return (long)ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1ChannelMonitorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_ChannelMonitorZ arg_conv = *(LDKCVec_ChannelMonitorZ*)arg;
-       FREE((void*)arg);
-       return CVec_ChannelMonitorZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1u64u64Z_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
+       LDKC2Tuple_u64u64Z* ret_ref = MALLOC(sizeof(LDKC2Tuple_u64u64Z), "LDKC2Tuple_u64u64Z");
+       *ret_ref = C2Tuple_u64u64Z_new(a, b);
+       return (long)ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1SignatureCVec_1SignatureZZ_1new(JNIEnv * _env, jclass _b, jbyteArray a, jobjectArray b) {
+       LDKSignature a_ref;
+       CHECK((*_env)->GetArrayLength (_env, a) == 64);
+       (*_env)->GetByteArrayRegion (_env, a, 0, 64, a_ref.compact_form);
+       LDKCVec_SignatureZ b_constr;
+       b_constr.datalen = (*_env)->GetArrayLength (_env, b);
+       if (b_constr.datalen > 0)
+               b_constr.data = MALLOC(b_constr.datalen * sizeof(LDKSignature), "LDKCVec_SignatureZ Elements");
+       else
+               b_constr.data = NULL;
+       for (size_t i = 0; i < b_constr.datalen; i++) {
+               jobject arr_conv_8 = (*_env)->GetObjectArrayElement(_env, b, i);
+               LDKSignature arr_conv_8_ref;
+               CHECK((*_env)->GetArrayLength (_env, arr_conv_8) == 64);
+               (*_env)->GetByteArrayRegion (_env, arr_conv_8, 0, 64, arr_conv_8_ref.compact_form);
+               b_constr.data[i] = arr_conv_8_ref;
+       }
+       LDKC2Tuple_SignatureCVec_SignatureZZ* ret_ref = MALLOC(sizeof(LDKC2Tuple_SignatureCVec_SignatureZZ), "LDKC2Tuple_SignatureCVec_SignatureZZ");
+       *ret_ref = C2Tuple_SignatureCVec_SignatureZZ_new(a_ref, b_constr);
+       return (long)ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1EventZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_EventZ arg_conv = *(LDKCVec_EventZ*)arg;
-       FREE((void*)arg);
-       return CVec_EventZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1C2Tuple_1SignatureCVec_1SignatureZZNoneZ_1err(JNIEnv * _env, jclass _b) {
+       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ), "LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ");
+       *ret_conv = CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ_err();
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1HTLCOutputInCommitmentZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_HTLCOutputInCommitmentZ arg_conv = *(LDKCVec_HTLCOutputInCommitmentZ*)arg;
-       FREE((void*)arg);
-       return CVec_HTLCOutputInCommitmentZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1SignatureNoneZ_1err(JNIEnv * _env, jclass _b) {
+       LDKCResult_SignatureNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
+       *ret_conv = CResult_SignatureNoneZ_err();
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1MessageSendEventZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_MessageSendEventZ arg_conv = *(LDKCVec_MessageSendEventZ*)arg;
-       FREE((void*)arg);
-       return CVec_MessageSendEventZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1SignatureZNoneZ_1err(JNIEnv * _env, jclass _b) {
+       LDKCResult_CVec_SignatureZNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_CVec_SignatureZNoneZ), "LDKCResult_CVec_SignatureZNoneZ");
+       *ret_conv = CResult_CVec_SignatureZNoneZ_err();
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1MonitorEventZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_MonitorEventZ arg_conv = *(LDKCVec_MonitorEventZ*)arg;
-       FREE((void*)arg);
-       return CVec_MonitorEventZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneAPIErrorZ_1ok(JNIEnv * _env, jclass _b) {
+       LDKCResult_NoneAPIErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
+       *ret_conv = CResult_NoneAPIErrorZ_ok();
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1NetAddressZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_NetAddressZ arg_conv = *(LDKCVec_NetAddressZ*)arg;
-       FREE((void*)arg);
-       return CVec_NetAddressZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NonePaymentSendFailureZ_1ok(JNIEnv * _env, jclass _b) {
+       LDKCResult_NonePaymentSendFailureZ* ret_conv = MALLOC(sizeof(LDKCResult_NonePaymentSendFailureZ), "LDKCResult_NonePaymentSendFailureZ");
+       *ret_conv = CResult_NonePaymentSendFailureZ_ok();
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1NodeAnnouncementZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_NodeAnnouncementZ arg_conv = *(LDKCVec_NodeAnnouncementZ*)arg;
-       FREE((void*)arg);
-       return CVec_NodeAnnouncementZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b, jlong c) {
+       LDKChannelAnnouncement a_conv;
+       a_conv.inner = (void*)(a & (~1));
+       a_conv.is_owned = (a & 1) || (a == 0);
+       if (a_conv.inner != NULL)
+               a_conv = ChannelAnnouncement_clone(&a_conv);
+       LDKChannelUpdate b_conv;
+       b_conv.inner = (void*)(b & (~1));
+       b_conv.is_owned = (b & 1) || (b == 0);
+       if (b_conv.inner != NULL)
+               b_conv = ChannelUpdate_clone(&b_conv);
+       LDKChannelUpdate c_conv;
+       c_conv.inner = (void*)(c & (~1));
+       c_conv.is_owned = (c & 1) || (c == 0);
+       if (c_conv.inner != NULL)
+               c_conv = ChannelUpdate_clone(&c_conv);
+       LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ* ret_ref = MALLOC(sizeof(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ), "LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ");
+       *ret_ref = C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_new(a_conv, b_conv, c_conv);
+       return (long)ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1PublicKeyZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_PublicKeyZ arg_conv = *(LDKCVec_PublicKeyZ*)arg;
-       FREE((void*)arg);
-       return CVec_PublicKeyZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NonePeerHandleErrorZ_1ok(JNIEnv * _env, jclass _b) {
+       LDKCResult_NonePeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
+       *ret_conv = CResult_NonePeerHandleErrorZ_ok();
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1RouteHintZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_RouteHintZ arg_conv = *(LDKCVec_RouteHintZ*)arg;
-       FREE((void*)arg);
-       return CVec_RouteHintZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1HTLCOutputInCommitmentSignatureZ_1new(JNIEnv * _env, jclass _b, jlong a, jbyteArray b) {
+       LDKHTLCOutputInCommitment a_conv;
+       a_conv.inner = (void*)(a & (~1));
+       a_conv.is_owned = (a & 1) || (a == 0);
+       if (a_conv.inner != NULL)
+               a_conv = HTLCOutputInCommitment_clone(&a_conv);
+       LDKSignature b_ref;
+       CHECK((*_env)->GetArrayLength (_env, b) == 64);
+       (*_env)->GetByteArrayRegion (_env, b, 0, 64, b_ref.compact_form);
+       LDKC2Tuple_HTLCOutputInCommitmentSignatureZ* ret_ref = MALLOC(sizeof(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ), "LDKC2Tuple_HTLCOutputInCommitmentSignatureZ");
+       *ret_ref = C2Tuple_HTLCOutputInCommitmentSignatureZ_new(a_conv, b_ref);
+       return (long)ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1RouteHopZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_RouteHopZ arg_conv = *(LDKCVec_RouteHopZ*)arg;
-       FREE((void*)arg);
-       return CVec_RouteHopZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Event_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKEvent this_ptr_conv = *(LDKEvent*)this_ptr;
+       FREE((void*)this_ptr);
+       Event_free(this_ptr_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1SignatureZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_SignatureZ arg_conv = *(LDKCVec_SignatureZ*)arg;
-       FREE((void*)arg);
-       return CVec_SignatureZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Event_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKEvent* orig_conv = (LDKEvent*)orig;
+       LDKEvent *ret_copy = MALLOC(sizeof(LDKEvent), "LDKEvent");
+       *ret_copy = Event_clone(orig_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1SpendableOutputDescriptorZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_SpendableOutputDescriptorZ arg_conv = *(LDKCVec_SpendableOutputDescriptorZ*)arg;
-       FREE((void*)arg);
-       return CVec_SpendableOutputDescriptorZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MessageSendEvent_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKMessageSendEvent this_ptr_conv = *(LDKMessageSendEvent*)this_ptr;
+       FREE((void*)this_ptr);
+       MessageSendEvent_free(this_ptr_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1TransactionZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_TransactionZ arg_conv = *(LDKCVec_TransactionZ*)arg;
-       FREE((void*)arg);
-       return CVec_TransactionZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_MessageSendEvent_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKMessageSendEvent* orig_conv = (LDKMessageSendEvent*)orig;
+       LDKMessageSendEvent *ret_copy = MALLOC(sizeof(LDKMessageSendEvent), "LDKMessageSendEvent");
+       *ret_copy = MessageSendEvent_clone(orig_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1TxOutZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_TxOutZ arg_conv = *(LDKCVec_TxOutZ*)arg;
-       FREE((void*)arg);
-       return CVec_TxOutZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MessageSendEventsProvider_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKMessageSendEventsProvider this_ptr_conv = *(LDKMessageSendEventsProvider*)this_ptr;
+       FREE((void*)this_ptr);
+       MessageSendEventsProvider_free(this_ptr_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateAddHTLCZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_UpdateAddHTLCZ arg_conv = *(LDKCVec_UpdateAddHTLCZ*)arg;
-       FREE((void*)arg);
-       return CVec_UpdateAddHTLCZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_EventsProvider_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKEventsProvider this_ptr_conv = *(LDKEventsProvider*)this_ptr;
+       FREE((void*)this_ptr);
+       EventsProvider_free(this_ptr_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateFailHTLCZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_UpdateFailHTLCZ arg_conv = *(LDKCVec_UpdateFailHTLCZ*)arg;
-       FREE((void*)arg);
-       return CVec_UpdateFailHTLCZ_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_APIError_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAPIError this_ptr_conv = *(LDKAPIError*)this_ptr;
+       FREE((void*)this_ptr);
+       APIError_free(this_ptr_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateFailMalformedHTLCZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_UpdateFailMalformedHTLCZ arg_conv = *(LDKCVec_UpdateFailMalformedHTLCZ*)arg;
-       FREE((void*)arg);
-       return CVec_UpdateFailMalformedHTLCZ_free(arg_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_APIError_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKAPIError* orig_conv = (LDKAPIError*)orig;
+       LDKAPIError *ret_copy = MALLOC(sizeof(LDKAPIError), "LDKAPIError");
+       *ret_copy = APIError_clone(orig_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1UpdateFulfillHTLCZ_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_UpdateFulfillHTLCZ arg_conv = *(LDKCVec_UpdateFulfillHTLCZ*)arg;
-       FREE((void*)arg);
-       return CVec_UpdateFulfillHTLCZ_free(arg_conv);
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_Level_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKLevel* orig_conv = (LDKLevel*)orig;
+       jclass ret_conv = LDKLevel_to_java(_env, Level_clone(orig_conv));
+       return ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1u64Z_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_u64Z arg_conv = *(LDKCVec_u64Z*)arg;
-       FREE((void*)arg);
-       return CVec_u64Z_free(arg_conv);
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_Level_1max(JNIEnv * _env, jclass _b) {
+       jclass ret_conv = LDKLevel_to_java(_env, Level_max());
+       return ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CVec_1u8Z_1free(JNIEnv * _env, jclass _b, jlong arg) {
-       LDKCVec_u8Z arg_conv = *(LDKCVec_u8Z*)arg;
-       FREE((void*)arg);
-       return CVec_u8Z_free(arg_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Logger_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKLogger this_ptr_conv = *(LDKLogger*)this_ptr;
+       FREE((void*)this_ptr);
+       Logger_free(this_ptr_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Transaction_1free(JNIEnv * _env, jclass _b, jlong _res) {
-       LDKTransaction _res_conv = *(LDKTransaction*)_res;
-       FREE((void*)_res);
-       return Transaction_free(_res_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelHandshakeConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeConfig_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelHandshakeConfig orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelHandshakeConfig ret_var = ChannelHandshakeConfig_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxOut_1free(JNIEnv * _env, jclass _b, jlong _res) {
-       LDKTxOut _res_conv = *(LDKTxOut*)_res;
-       FREE((void*)_res);
-       return TxOut_free(_res_conv);
+JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1get_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelHandshakeConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = ChannelHandshakeConfig_get_minimum_depth(&this_ptr_conv);
+       return ret_val;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1usizeTransactionZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
-       LDKTransaction b_conv = *(LDKTransaction*)b;
-       FREE((void*)b);
-       LDKC2Tuple_usizeTransactionZ* ret = MALLOC(sizeof(LDKC2Tuple_usizeTransactionZ), "LDKC2Tuple_usizeTransactionZ");
-       *ret = C2Tuple_usizeTransactionZ_new(a, b_conv);
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1set_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
+       LDKChannelHandshakeConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeConfig_set_minimum_depth(&this_ptr_conv, val);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneChannelMonitorUpdateErrZ_1ok(JNIEnv * _env, jclass _b) {
-       LDKCResult_NoneChannelMonitorUpdateErrZ* ret = MALLOC(sizeof(LDKCResult_NoneChannelMonitorUpdateErrZ), "LDKCResult_NoneChannelMonitorUpdateErrZ");
-       *ret = CResult_NoneChannelMonitorUpdateErrZ_ok();
-       return (long)ret;
+JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1get_1our_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelHandshakeConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = ChannelHandshakeConfig_get_our_to_self_delay(&this_ptr_conv);
+       return ret_val;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneMonitorUpdateErrorZ_1ok(JNIEnv * _env, jclass _b) {
-       LDKCResult_NoneMonitorUpdateErrorZ* ret = MALLOC(sizeof(LDKCResult_NoneMonitorUpdateErrorZ), "LDKCResult_NoneMonitorUpdateErrorZ");
-       *ret = CResult_NoneMonitorUpdateErrorZ_ok();
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1set_1our_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
+       LDKChannelHandshakeConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeConfig_set_our_to_self_delay(&this_ptr_conv, val);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1OutPointScriptZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
-       LDKOutPoint a_conv = *(LDKOutPoint*)a;
-       FREE((void*)a);
-       a_conv.is_owned = true;
-       LDKCVec_u8Z b_conv = *(LDKCVec_u8Z*)b;
-       FREE((void*)b);
-       LDKC2Tuple_OutPointScriptZ* ret = MALLOC(sizeof(LDKC2Tuple_OutPointScriptZ), "LDKC2Tuple_OutPointScriptZ");
-       *ret = C2Tuple_OutPointScriptZ_new(a_conv, b_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1get_1our_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelHandshakeConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelHandshakeConfig_get_our_htlc_minimum_msat(&this_ptr_conv);
+       return ret_val;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1TxidCVec_1TxOutZZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
-       LDKThirtyTwoBytes a_conv = *(LDKThirtyTwoBytes*)a;
-       FREE((void*)a);
-       LDKCVec_TxOutZ b_conv = *(LDKCVec_TxOutZ*)b;
-       FREE((void*)b);
-       LDKC2Tuple_TxidCVec_TxOutZZ* ret = MALLOC(sizeof(LDKC2Tuple_TxidCVec_TxOutZZ), "LDKC2Tuple_TxidCVec_TxOutZZ");
-       *ret = C2Tuple_TxidCVec_TxOutZZ_new(a_conv, b_conv);
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1set_1our_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
+       LDKChannelHandshakeConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeConfig_set_our_htlc_minimum_msat(&this_ptr_conv, val);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1u64u64Z_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
-       LDKC2Tuple_u64u64Z* ret = MALLOC(sizeof(LDKC2Tuple_u64u64Z), "LDKC2Tuple_u64u64Z");
-       *ret = C2Tuple_u64u64Z_new(a, b);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1new(JNIEnv * _env, jclass _b, jint minimum_depth_arg, jshort our_to_self_delay_arg, jlong our_htlc_minimum_msat_arg) {
+       LDKChannelHandshakeConfig ret_var = ChannelHandshakeConfig_new(minimum_depth_arg, our_to_self_delay_arg, our_htlc_minimum_msat_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1SignatureCVec_1SignatureZZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
-       LDKSignature a_conv = *(LDKSignature*)a;
-       FREE((void*)a);
-       LDKCVec_SignatureZ b_conv = *(LDKCVec_SignatureZ*)b;
-       FREE((void*)b);
-       LDKC2Tuple_SignatureCVec_SignatureZZ* ret = MALLOC(sizeof(LDKC2Tuple_SignatureCVec_SignatureZZ), "LDKC2Tuple_SignatureCVec_SignatureZZ");
-       *ret = C2Tuple_SignatureCVec_SignatureZZ_new(a_conv, b_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1default(JNIEnv * _env, jclass _b) {
+       LDKChannelHandshakeConfig ret_var = ChannelHandshakeConfig_default();
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1C2Tuple_1SignatureCVec_1SignatureZZNoneZ_1err(JNIEnv * _env, jclass _b) {
-       LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ* ret = MALLOC(sizeof(LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ), "LDKCResult_C2Tuple_SignatureCVec_SignatureZZNoneZ");
-       *ret = CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ_err();
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelHandshakeLimits orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelHandshakeLimits ret_var = ChannelHandshakeLimits_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1SignatureNoneZ_1err(JNIEnv * _env, jclass _b) {
-       LDKCResult_SignatureNoneZ* ret = MALLOC(sizeof(LDKCResult_SignatureNoneZ), "LDKCResult_SignatureNoneZ");
-       *ret = CResult_SignatureNoneZ_err();
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1min_1funding_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelHandshakeLimits_get_min_funding_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1CVec_1SignatureZNoneZ_1err(JNIEnv * _env, jclass _b) {
-       LDKCResult_CVec_SignatureZNoneZ* ret = MALLOC(sizeof(LDKCResult_CVec_SignatureZNoneZ), "LDKCResult_CVec_SignatureZNoneZ");
-       *ret = CResult_CVec_SignatureZNoneZ_err();
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NoneAPIErrorZ_1ok(JNIEnv * _env, jclass _b) {
-       LDKCResult_NoneAPIErrorZ* ret = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
-       *ret = CResult_NoneAPIErrorZ_ok();
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NonePaymentSendFailureZ_1ok(JNIEnv * _env, jclass _b) {
-       LDKCResult_NonePaymentSendFailureZ* ret = MALLOC(sizeof(LDKCResult_NonePaymentSendFailureZ), "LDKCResult_NonePaymentSendFailureZ");
-       *ret = CResult_NonePaymentSendFailureZ_ok();
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C3Tuple_1ChannelAnnouncementChannelUpdateChannelUpdateZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b, jlong c) {
-       LDKChannelAnnouncement a_conv = *(LDKChannelAnnouncement*)a;
-       FREE((void*)a);
-       a_conv.is_owned = true;
-       LDKChannelUpdate b_conv = *(LDKChannelUpdate*)b;
-       FREE((void*)b);
-       b_conv.is_owned = true;
-       LDKChannelUpdate c_conv = *(LDKChannelUpdate*)c;
-       FREE((void*)c);
-       c_conv.is_owned = true;
-       LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ* ret = MALLOC(sizeof(LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ), "LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ");
-       *ret = C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_new(a_conv, b_conv, c_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CResult_1NonePeerHandleErrorZ_1ok(JNIEnv * _env, jclass _b) {
-       LDKCResult_NonePeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
-       *ret = CResult_NonePeerHandleErrorZ_ok();
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_C2Tuple_1HTLCOutputInCommitmentSignatureZ_1new(JNIEnv * _env, jclass _b, jlong a, jlong b) {
-       LDKHTLCOutputInCommitment a_conv = *(LDKHTLCOutputInCommitment*)a;
-       FREE((void*)a);
-       a_conv.is_owned = true;
-       LDKSignature b_conv = *(LDKSignature*)b;
-       FREE((void*)b);
-       LDKC2Tuple_HTLCOutputInCommitmentSignatureZ* ret = MALLOC(sizeof(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ), "LDKC2Tuple_HTLCOutputInCommitmentSignatureZ");
-       *ret = C2Tuple_HTLCOutputInCommitmentSignatureZ_new(a_conv, b_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Event_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKEvent this_ptr_conv = *(LDKEvent*)this_ptr;
-       FREE((void*)this_ptr);
-       return Event_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MessageSendEvent_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKMessageSendEvent this_ptr_conv = *(LDKMessageSendEvent*)this_ptr;
-       FREE((void*)this_ptr);
-       return MessageSendEvent_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MessageSendEventsProvider_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKMessageSendEventsProvider this_ptr_conv = *(LDKMessageSendEventsProvider*)this_ptr;
-       FREE((void*)this_ptr);
-       return MessageSendEventsProvider_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_EventsProvider_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKEventsProvider this_ptr_conv = *(LDKEventsProvider*)this_ptr;
-       FREE((void*)this_ptr);
-       return EventsProvider_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_APIError_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAPIError this_ptr_conv = *(LDKAPIError*)this_ptr;
-       FREE((void*)this_ptr);
-       return APIError_free(this_ptr_conv);
-}
-
-JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_Level_1max(JNIEnv * _env, jclass _b) {
-       jclass ret = LDKLevel_to_java(_env, Level_max());
-       return ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Logger_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKLogger this_ptr_conv = *(LDKLogger*)this_ptr;
-       FREE((void*)this_ptr);
-       return Logger_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeConfig this_ptr_conv = *(LDKChannelHandshakeConfig*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelHandshakeConfig_free(this_ptr_conv);
-}
-
-JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1get_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeConfig* this_ptr_conv = (LDKChannelHandshakeConfig*)this_ptr;
-       return ChannelHandshakeConfig_get_minimum_depth(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1set_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKChannelHandshakeConfig* this_ptr_conv = (LDKChannelHandshakeConfig*)this_ptr;
-       return ChannelHandshakeConfig_set_minimum_depth(this_ptr_conv, val);
-}
-
-JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1get_1our_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeConfig* this_ptr_conv = (LDKChannelHandshakeConfig*)this_ptr;
-       return ChannelHandshakeConfig_get_our_to_self_delay(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1set_1our_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKChannelHandshakeConfig* this_ptr_conv = (LDKChannelHandshakeConfig*)this_ptr;
-       return ChannelHandshakeConfig_set_our_to_self_delay(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1get_1our_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeConfig* this_ptr_conv = (LDKChannelHandshakeConfig*)this_ptr;
-       return ChannelHandshakeConfig_get_our_htlc_minimum_msat(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1set_1our_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelHandshakeConfig* this_ptr_conv = (LDKChannelHandshakeConfig*)this_ptr;
-       return ChannelHandshakeConfig_set_our_htlc_minimum_msat(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1new(JNIEnv * _env, jclass _b, jint minimum_depth_arg, jshort our_to_self_delay_arg, jlong our_htlc_minimum_msat_arg) {
-       LDKChannelHandshakeConfig* ret = MALLOC(sizeof(LDKChannelHandshakeConfig), "LDKChannelHandshakeConfig");
-       *ret = ChannelHandshakeConfig_new(minimum_depth_arg, our_to_self_delay_arg, our_htlc_minimum_msat_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeConfig_1default(JNIEnv * _env, jclass _b) {
-       LDKChannelHandshakeConfig* ret = MALLOC(sizeof(LDKChannelHandshakeConfig), "LDKChannelHandshakeConfig");
-       *ret = ChannelHandshakeConfig_default();
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits this_ptr_conv = *(LDKChannelHandshakeLimits*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelHandshakeLimits_free(this_ptr_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1min_1funding_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_min_funding_satoshis(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1min_1funding_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_min_funding_satoshis(this_ptr_conv, val);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1min_1funding_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_min_funding_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1max_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_max_htlc_minimum_msat(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelHandshakeLimits_get_max_htlc_minimum_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1max_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_max_htlc_minimum_msat(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_max_htlc_minimum_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1min_1max_1htlc_1value_1in_1flight_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_min_max_htlc_value_in_flight_msat(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelHandshakeLimits_get_min_max_htlc_value_in_flight_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1min_1max_1htlc_1value_1in_1flight_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_min_max_htlc_value_in_flight_msat(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_min_max_htlc_value_in_flight_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1max_1channel_1reserve_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_max_channel_reserve_satoshis(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelHandshakeLimits_get_max_channel_reserve_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1max_1channel_1reserve_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_max_channel_reserve_satoshis(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_max_channel_reserve_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1min_1max_1accepted_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_min_max_accepted_htlcs(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = ChannelHandshakeLimits_get_min_max_accepted_htlcs(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1min_1max_1accepted_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_min_max_accepted_htlcs(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_min_max_accepted_htlcs(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1min_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_min_dust_limit_satoshis(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelHandshakeLimits_get_min_dust_limit_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1min_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_min_dust_limit_satoshis(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_min_dust_limit_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1max_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_max_dust_limit_satoshis(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelHandshakeLimits_get_max_dust_limit_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1max_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_max_dust_limit_satoshis(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_max_dust_limit_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1max_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_max_minimum_depth(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = ChannelHandshakeLimits_get_max_minimum_depth(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1max_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_max_minimum_depth(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_max_minimum_depth(&this_ptr_conv, val);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1force_1announced_1channel_1preference(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_force_announced_channel_preference(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = ChannelHandshakeLimits_get_force_announced_channel_preference(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1force_1announced_1channel_1preference(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_force_announced_channel_preference(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_force_announced_channel_preference(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1get_1their_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_get_their_to_self_delay(this_ptr_conv);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = ChannelHandshakeLimits_get_their_to_self_delay(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1set_1their_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKChannelHandshakeLimits* this_ptr_conv = (LDKChannelHandshakeLimits*)this_ptr;
-       return ChannelHandshakeLimits_set_their_to_self_delay(this_ptr_conv, val);
+       LDKChannelHandshakeLimits this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelHandshakeLimits_set_their_to_self_delay(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1new(JNIEnv * _env, jclass _b, jlong min_funding_satoshis_arg, jlong max_htlc_minimum_msat_arg, jlong min_max_htlc_value_in_flight_msat_arg, jlong max_channel_reserve_satoshis_arg, jshort min_max_accepted_htlcs_arg, jlong min_dust_limit_satoshis_arg, jlong max_dust_limit_satoshis_arg, jint max_minimum_depth_arg, jboolean force_announced_channel_preference_arg, jshort their_to_self_delay_arg) {
-       LDKChannelHandshakeLimits* ret = MALLOC(sizeof(LDKChannelHandshakeLimits), "LDKChannelHandshakeLimits");
-       *ret = ChannelHandshakeLimits_new(min_funding_satoshis_arg, max_htlc_minimum_msat_arg, min_max_htlc_value_in_flight_msat_arg, max_channel_reserve_satoshis_arg, min_max_accepted_htlcs_arg, min_dust_limit_satoshis_arg, max_dust_limit_satoshis_arg, max_minimum_depth_arg, force_announced_channel_preference_arg, their_to_self_delay_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelHandshakeLimits ret_var = ChannelHandshakeLimits_new(min_funding_satoshis_arg, max_htlc_minimum_msat_arg, min_max_htlc_value_in_flight_msat_arg, max_channel_reserve_satoshis_arg, min_max_accepted_htlcs_arg, min_dust_limit_satoshis_arg, max_dust_limit_satoshis_arg, max_minimum_depth_arg, force_announced_channel_preference_arg, their_to_self_delay_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelHandshakeLimits_1default(JNIEnv * _env, jclass _b) {
-       LDKChannelHandshakeLimits* ret = MALLOC(sizeof(LDKChannelHandshakeLimits), "LDKChannelHandshakeLimits");
-       *ret = ChannelHandshakeLimits_default();
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelHandshakeLimits ret_var = ChannelHandshakeLimits_default();
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelConfig this_ptr_conv = *(LDKChannelConfig*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelConfig_free(this_ptr_conv);
+       LDKChannelConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelConfig_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelConfig orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelConfig ret_var = ChannelConfig_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1get_1fee_1proportional_1millionths(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelConfig* this_ptr_conv = (LDKChannelConfig*)this_ptr;
-       return ChannelConfig_get_fee_proportional_millionths(this_ptr_conv);
+       LDKChannelConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = ChannelConfig_get_fee_proportional_millionths(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1set_1fee_1proportional_1millionths(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKChannelConfig* this_ptr_conv = (LDKChannelConfig*)this_ptr;
-       return ChannelConfig_set_fee_proportional_millionths(this_ptr_conv, val);
+       LDKChannelConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelConfig_set_fee_proportional_millionths(&this_ptr_conv, val);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1get_1announced_1channel(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelConfig* this_ptr_conv = (LDKChannelConfig*)this_ptr;
-       return ChannelConfig_get_announced_channel(this_ptr_conv);
+       LDKChannelConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = ChannelConfig_get_announced_channel(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1set_1announced_1channel(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKChannelConfig* this_ptr_conv = (LDKChannelConfig*)this_ptr;
-       return ChannelConfig_set_announced_channel(this_ptr_conv, val);
+       LDKChannelConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelConfig_set_announced_channel(&this_ptr_conv, val);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1get_1commit_1upfront_1shutdown_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelConfig* this_ptr_conv = (LDKChannelConfig*)this_ptr;
-       return ChannelConfig_get_commit_upfront_shutdown_pubkey(this_ptr_conv);
+       LDKChannelConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = ChannelConfig_get_commit_upfront_shutdown_pubkey(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1set_1commit_1upfront_1shutdown_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKChannelConfig* this_ptr_conv = (LDKChannelConfig*)this_ptr;
-       return ChannelConfig_set_commit_upfront_shutdown_pubkey(this_ptr_conv, val);
+       LDKChannelConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelConfig_set_commit_upfront_shutdown_pubkey(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1new(JNIEnv * _env, jclass _b, jint fee_proportional_millionths_arg, jboolean announced_channel_arg, jboolean commit_upfront_shutdown_pubkey_arg) {
-       LDKChannelConfig* ret = MALLOC(sizeof(LDKChannelConfig), "LDKChannelConfig");
-       *ret = ChannelConfig_new(fee_proportional_millionths_arg, announced_channel_arg, commit_upfront_shutdown_pubkey_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelConfig ret_var = ChannelConfig_new(fee_proportional_millionths_arg, announced_channel_arg, commit_upfront_shutdown_pubkey_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1default(JNIEnv * _env, jclass _b) {
-       LDKChannelConfig* ret = MALLOC(sizeof(LDKChannelConfig), "LDKChannelConfig");
-       *ret = ChannelConfig_default();
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKChannelConfig* obj_conv = (LDKChannelConfig*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ChannelConfig_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKChannelConfig* ret = MALLOC(sizeof(LDKChannelConfig), "LDKChannelConfig");
-       *ret = ChannelConfig_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelConfig ret_var = ChannelConfig_default();
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKChannelConfig obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ChannelConfig_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelConfig_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKChannelConfig ret_var = ChannelConfig_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UserConfig_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUserConfig this_ptr_conv = *(LDKUserConfig*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UserConfig_free(this_ptr_conv);
+       LDKUserConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UserConfig_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UserConfig_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUserConfig orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUserConfig ret_var = UserConfig_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UserConfig_1get_1own_1channel_1config(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUserConfig* this_ptr_conv = (LDKUserConfig*)this_ptr;
-       LDKChannelHandshakeConfig* ret = MALLOC(sizeof(LDKChannelHandshakeConfig), "LDKChannelHandshakeConfig");
-       *ret = UserConfig_get_own_channel_config(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUserConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelHandshakeConfig ret_var = UserConfig_get_own_channel_config(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UserConfig_1set_1own_1channel_1config(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUserConfig* this_ptr_conv = (LDKUserConfig*)this_ptr;
-       LDKChannelHandshakeConfig val_conv = *(LDKChannelHandshakeConfig*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return UserConfig_set_own_channel_config(this_ptr_conv, val_conv);
+       LDKUserConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelHandshakeConfig val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = ChannelHandshakeConfig_clone(&val_conv);
+       UserConfig_set_own_channel_config(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UserConfig_1get_1peer_1channel_1config_1limits(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUserConfig* this_ptr_conv = (LDKUserConfig*)this_ptr;
-       LDKChannelHandshakeLimits* ret = MALLOC(sizeof(LDKChannelHandshakeLimits), "LDKChannelHandshakeLimits");
-       *ret = UserConfig_get_peer_channel_config_limits(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUserConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelHandshakeLimits ret_var = UserConfig_get_peer_channel_config_limits(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UserConfig_1set_1peer_1channel_1config_1limits(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUserConfig* this_ptr_conv = (LDKUserConfig*)this_ptr;
-       LDKChannelHandshakeLimits val_conv = *(LDKChannelHandshakeLimits*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return UserConfig_set_peer_channel_config_limits(this_ptr_conv, val_conv);
+       LDKUserConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelHandshakeLimits val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = ChannelHandshakeLimits_clone(&val_conv);
+       UserConfig_set_peer_channel_config_limits(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UserConfig_1get_1channel_1options(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUserConfig* this_ptr_conv = (LDKUserConfig*)this_ptr;
-       LDKChannelConfig* ret = MALLOC(sizeof(LDKChannelConfig), "LDKChannelConfig");
-       *ret = UserConfig_get_channel_options(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUserConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelConfig ret_var = UserConfig_get_channel_options(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UserConfig_1set_1channel_1options(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUserConfig* this_ptr_conv = (LDKUserConfig*)this_ptr;
-       LDKChannelConfig val_conv = *(LDKChannelConfig*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return UserConfig_set_channel_options(this_ptr_conv, val_conv);
+       LDKUserConfig this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelConfig val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = ChannelConfig_clone(&val_conv);
+       UserConfig_set_channel_options(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UserConfig_1new(JNIEnv * _env, jclass _b, jlong own_channel_config_arg, jlong peer_channel_config_limits_arg, jlong channel_options_arg) {
-       LDKChannelHandshakeConfig own_channel_config_arg_conv = *(LDKChannelHandshakeConfig*)own_channel_config_arg;
-       FREE((void*)own_channel_config_arg);
-       own_channel_config_arg_conv.is_owned = true;
-       LDKChannelHandshakeLimits peer_channel_config_limits_arg_conv = *(LDKChannelHandshakeLimits*)peer_channel_config_limits_arg;
-       FREE((void*)peer_channel_config_limits_arg);
-       peer_channel_config_limits_arg_conv.is_owned = true;
-       LDKChannelConfig channel_options_arg_conv = *(LDKChannelConfig*)channel_options_arg;
-       FREE((void*)channel_options_arg);
-       channel_options_arg_conv.is_owned = true;
-       LDKUserConfig* ret = MALLOC(sizeof(LDKUserConfig), "LDKUserConfig");
-       *ret = UserConfig_new(own_channel_config_arg_conv, peer_channel_config_limits_arg_conv, channel_options_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelHandshakeConfig own_channel_config_arg_conv;
+       own_channel_config_arg_conv.inner = (void*)(own_channel_config_arg & (~1));
+       own_channel_config_arg_conv.is_owned = (own_channel_config_arg & 1) || (own_channel_config_arg == 0);
+       if (own_channel_config_arg_conv.inner != NULL)
+               own_channel_config_arg_conv = ChannelHandshakeConfig_clone(&own_channel_config_arg_conv);
+       LDKChannelHandshakeLimits peer_channel_config_limits_arg_conv;
+       peer_channel_config_limits_arg_conv.inner = (void*)(peer_channel_config_limits_arg & (~1));
+       peer_channel_config_limits_arg_conv.is_owned = (peer_channel_config_limits_arg & 1) || (peer_channel_config_limits_arg == 0);
+       if (peer_channel_config_limits_arg_conv.inner != NULL)
+               peer_channel_config_limits_arg_conv = ChannelHandshakeLimits_clone(&peer_channel_config_limits_arg_conv);
+       LDKChannelConfig channel_options_arg_conv;
+       channel_options_arg_conv.inner = (void*)(channel_options_arg & (~1));
+       channel_options_arg_conv.is_owned = (channel_options_arg & 1) || (channel_options_arg == 0);
+       if (channel_options_arg_conv.inner != NULL)
+               channel_options_arg_conv = ChannelConfig_clone(&channel_options_arg_conv);
+       LDKUserConfig ret_var = UserConfig_new(own_channel_config_arg_conv, peer_channel_config_limits_arg_conv, channel_options_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UserConfig_1default(JNIEnv * _env, jclass _b) {
-       LDKUserConfig* ret = MALLOC(sizeof(LDKUserConfig), "LDKUserConfig");
-       *ret = UserConfig_default();
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUserConfig ret_var = UserConfig_default();
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_AccessError_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKAccessError* orig_conv = (LDKAccessError*)orig;
+       jclass ret_conv = LDKAccessError_to_java(_env, AccessError_clone(orig_conv));
+       return ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Access_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKAccess this_ptr_conv = *(LDKAccess*)this_ptr;
        FREE((void*)this_ptr);
-       return Access_free(this_ptr_conv);
+       Access_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Watch_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKWatch this_ptr_conv = *(LDKWatch*)this_ptr;
        FREE((void*)this_ptr);
-       return Watch_free(this_ptr_conv);
+       Watch_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Filter_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKFilter this_ptr_conv = *(LDKFilter*)this_ptr;
        FREE((void*)this_ptr);
-       return Filter_free(this_ptr_conv);
+       Filter_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_BroadcasterInterface_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKBroadcasterInterface this_ptr_conv = *(LDKBroadcasterInterface*)this_ptr;
        FREE((void*)this_ptr);
-       return BroadcasterInterface_free(this_ptr_conv);
+       BroadcasterInterface_free(this_ptr_conv);
+}
+
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_ConfirmationTarget_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKConfirmationTarget* orig_conv = (LDKConfirmationTarget*)orig;
+       jclass ret_conv = LDKConfirmationTarget_to_java(_env, ConfirmationTarget_clone(orig_conv));
+       return ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FeeEstimator_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKFeeEstimator this_ptr_conv = *(LDKFeeEstimator*)this_ptr;
        FREE((void*)this_ptr);
-       return FeeEstimator_free(this_ptr_conv);
+       FeeEstimator_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChainMonitor this_ptr_conv = *(LDKChainMonitor*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChainMonitor_free(this_ptr_conv);
+       LDKChainMonitor this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChainMonitor_free(this_ptr_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1block_1connected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jlong txdata, jint height) {
-       LDKChainMonitor* this_arg_conv = (LDKChainMonitor*)this_arg;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1block_1connected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jlongArray txdata, jint height) {
+       LDKChainMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char header_arr[80];
+       CHECK((*_env)->GetArrayLength (_env, header) == 80);
        (*_env)->GetByteArrayRegion (_env, header, 0, 80, header_arr);
        unsigned char (*header_ref)[80] = &header_arr;
-       LDKCVec_C2Tuple_usizeTransactionZZ txdata_conv = *(LDKCVec_C2Tuple_usizeTransactionZZ*)txdata;
-       FREE((void*)txdata);
-       return ChainMonitor_block_connected(this_arg_conv, header_ref, txdata_conv, height);
+       LDKCVec_C2Tuple_usizeTransactionZZ txdata_constr;
+       txdata_constr.datalen = (*_env)->GetArrayLength (_env, txdata);
+       if (txdata_constr.datalen > 0)
+               txdata_constr.data = MALLOC(txdata_constr.datalen * sizeof(LDKC2Tuple_usizeTransactionZ), "LDKCVec_C2Tuple_usizeTransactionZZ Elements");
+       else
+               txdata_constr.data = NULL;
+       long* txdata_vals = (*_env)->GetLongArrayElements (_env, txdata, NULL);
+       for (size_t d = 0; d < txdata_constr.datalen; d++) {
+               long arr_conv_29 = txdata_vals[d];
+               LDKC2Tuple_usizeTransactionZ arr_conv_29_conv = *(LDKC2Tuple_usizeTransactionZ*)arr_conv_29;
+               FREE((void*)arr_conv_29);
+               txdata_constr.data[d] = arr_conv_29_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, txdata, txdata_vals, 0);
+       ChainMonitor_block_connected(&this_arg_conv, header_ref, txdata_constr, height);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1block_1disconnected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jint disconnected_height) {
-       LDKChainMonitor* this_arg_conv = (LDKChainMonitor*)this_arg;
+       LDKChainMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char header_arr[80];
+       CHECK((*_env)->GetArrayLength (_env, header) == 80);
        (*_env)->GetByteArrayRegion (_env, header, 0, 80, header_arr);
        unsigned char (*header_ref)[80] = &header_arr;
-       return ChainMonitor_block_disconnected(this_arg_conv, header_ref, disconnected_height);
+       ChainMonitor_block_disconnected(&this_arg_conv, header_ref, disconnected_height);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1new(JNIEnv * _env, jclass _b, jlong chain_source, jlong broadcaster, jlong logger, jlong feeest) {
@@ -2323,159 +6226,298 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1new(JNIEnv * _e
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKFeeEstimator_JCalls_clone(feeest_conv.this_arg);
        }
-       LDKChainMonitor* ret = MALLOC(sizeof(LDKChainMonitor), "LDKChainMonitor");
-       *ret = ChainMonitor_new(chain_source_conv, broadcaster_conv, logger_conv, feeest_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChainMonitor ret_var = ChainMonitor_new(chain_source_conv, broadcaster_conv, logger_conv, feeest_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1as_1Watch(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChainMonitor* this_arg_conv = (LDKChainMonitor*)this_arg;
+       LDKChainMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKWatch* ret = MALLOC(sizeof(LDKWatch), "LDKWatch");
-       *ret = ChainMonitor_as_Watch(this_arg_conv);
+       *ret = ChainMonitor_as_Watch(&this_arg_conv);
        return (long)ret;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChainMonitor_1as_1EventsProvider(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChainMonitor* this_arg_conv = (LDKChainMonitor*)this_arg;
+       LDKChainMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKEventsProvider* ret = MALLOC(sizeof(LDKEventsProvider), "LDKEventsProvider");
-       *ret = ChainMonitor_as_EventsProvider(this_arg_conv);
+       *ret = ChainMonitor_as_EventsProvider(&this_arg_conv);
        return (long)ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelMonitorUpdate this_ptr_conv = *(LDKChannelMonitorUpdate*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelMonitorUpdate_free(this_ptr_conv);
+       LDKChannelMonitorUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelMonitorUpdate_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelMonitorUpdate orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelMonitorUpdate ret_var = ChannelMonitorUpdate_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1get_1update_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelMonitorUpdate* this_ptr_conv = (LDKChannelMonitorUpdate*)this_ptr;
-       return ChannelMonitorUpdate_get_update_id(this_ptr_conv);
+       LDKChannelMonitorUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelMonitorUpdate_get_update_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1set_1update_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelMonitorUpdate* this_ptr_conv = (LDKChannelMonitorUpdate*)this_ptr;
-       return ChannelMonitorUpdate_set_update_id(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKChannelMonitorUpdate* obj_conv = (LDKChannelMonitorUpdate*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ChannelMonitorUpdate_write(obj_conv);
-       return (long)ret;
+       LDKChannelMonitorUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelMonitorUpdate_set_update_id(&this_ptr_conv, val);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKChannelMonitorUpdate obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ChannelMonitorUpdate_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKChannelMonitorUpdate ret_var = ChannelMonitorUpdate_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdate_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKChannelMonitorUpdate* ret = MALLOC(sizeof(LDKChannelMonitorUpdate), "LDKChannelMonitorUpdate");
-       *ret = ChannelMonitorUpdate_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT jclass JNICALL Java_org_ldk_impl_bindings_ChannelMonitorUpdateErr_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelMonitorUpdateErr* orig_conv = (LDKChannelMonitorUpdateErr*)orig;
+       jclass ret_conv = LDKChannelMonitorUpdateErr_to_java(_env, ChannelMonitorUpdateErr_clone(orig_conv));
+       return ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MonitorUpdateError_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKMonitorUpdateError this_ptr_conv = *(LDKMonitorUpdateError*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return MonitorUpdateError_free(this_ptr_conv);
+       LDKMonitorUpdateError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       MonitorUpdateError_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MonitorEvent_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKMonitorEvent this_ptr_conv = *(LDKMonitorEvent*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return MonitorEvent_free(this_ptr_conv);
+       LDKMonitorEvent this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       MonitorEvent_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_MonitorEvent_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKMonitorEvent orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKMonitorEvent ret_var = MonitorEvent_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCUpdate_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHTLCUpdate this_ptr_conv = *(LDKHTLCUpdate*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return HTLCUpdate_free(this_ptr_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKHTLCUpdate* obj_conv = (LDKHTLCUpdate*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = HTLCUpdate_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCUpdate_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKHTLCUpdate* ret = MALLOC(sizeof(LDKHTLCUpdate), "LDKHTLCUpdate");
-       *ret = HTLCUpdate_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKHTLCUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       HTLCUpdate_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCUpdate_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKHTLCUpdate orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKHTLCUpdate ret_var = HTLCUpdate_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_HTLCUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKHTLCUpdate obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = HTLCUpdate_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCUpdate_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKHTLCUpdate ret_var = HTLCUpdate_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelMonitor this_ptr_conv = *(LDKChannelMonitor*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelMonitor_free(this_ptr_conv);
+       LDKChannelMonitor this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelMonitor_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1update_1monitor(JNIEnv * _env, jclass _b, jlong this_arg, jlong updates, jlong broadcaster, jlong logger) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
-       LDKChannelMonitorUpdate updates_conv = *(LDKChannelMonitorUpdate*)updates;
-       FREE((void*)updates);
-       updates_conv.is_owned = true;
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKChannelMonitorUpdate updates_conv;
+       updates_conv.inner = (void*)(updates & (~1));
+       updates_conv.is_owned = (updates & 1) || (updates == 0);
+       if (updates_conv.inner != NULL)
+               updates_conv = ChannelMonitorUpdate_clone(&updates_conv);
        LDKBroadcasterInterface* broadcaster_conv = (LDKBroadcasterInterface*)broadcaster;
        LDKLogger* logger_conv = (LDKLogger*)logger;
-       LDKCResult_NoneMonitorUpdateErrorZ* ret = MALLOC(sizeof(LDKCResult_NoneMonitorUpdateErrorZ), "LDKCResult_NoneMonitorUpdateErrorZ");
-       *ret = ChannelMonitor_update_monitor(this_arg_conv, updates_conv, broadcaster_conv, logger_conv);
-       return (long)ret;
+       LDKCResult_NoneMonitorUpdateErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneMonitorUpdateErrorZ), "LDKCResult_NoneMonitorUpdateErrorZ");
+       *ret_conv = ChannelMonitor_update_monitor(&this_arg_conv, updates_conv, broadcaster_conv, logger_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1latest_1update_1id(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
-       return ChannelMonitor_get_latest_update_id(this_arg_conv);
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       jlong ret_val = ChannelMonitor_get_latest_update_id(&this_arg_conv);
+       return ret_val;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1funding_1txo(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
-       LDKC2Tuple_OutPointScriptZ* ret = MALLOC(sizeof(LDKC2Tuple_OutPointScriptZ), "LDKC2Tuple_OutPointScriptZ");
-       *ret = ChannelMonitor_get_funding_txo(this_arg_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1and_1clear_1pending_1monitor_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
-       LDKCVec_MonitorEventZ* ret = MALLOC(sizeof(LDKCVec_MonitorEventZ), "LDKCVec_MonitorEventZ");
-       *ret = ChannelMonitor_get_and_clear_pending_monitor_events(this_arg_conv);
-       return (long)ret;
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKC2Tuple_OutPointScriptZ* ret_ref = MALLOC(sizeof(LDKC2Tuple_OutPointScriptZ), "LDKC2Tuple_OutPointScriptZ");
+       *ret_ref = ChannelMonitor_get_funding_txo(&this_arg_conv);
+       return (long)ret_ref;
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1and_1clear_1pending_1monitor_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKCVec_MonitorEventZ ret_var = ChannelMonitor_get_and_clear_pending_monitor_events(&this_arg_conv);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t o = 0; o < ret_var.datalen; o++) {
+               LDKMonitorEvent arr_conv_14_var = ret_var.data[o];
+               CHECK((((long)arr_conv_14_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+               CHECK((((long)&arr_conv_14_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+               long arr_conv_14_ref = (long)arr_conv_14_var.inner;
+               if (arr_conv_14_var.is_owned) {
+                       arr_conv_14_ref |= 1;
+               }
+               ret_arr_ptr[o] = arr_conv_14_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       FREE(ret_var.data);
+       return ret_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1and_1clear_1pending_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
-       LDKCVec_EventZ* ret = MALLOC(sizeof(LDKCVec_EventZ), "LDKCVec_EventZ");
-       *ret = ChannelMonitor_get_and_clear_pending_events(this_arg_conv);
-       return (long)ret;
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1and_1clear_1pending_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKCVec_EventZ ret_var = ChannelMonitor_get_and_clear_pending_events(&this_arg_conv);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t h = 0; h < ret_var.datalen; h++) {
+               LDKEvent *arr_conv_7_copy = MALLOC(sizeof(LDKEvent), "LDKEvent");
+               *arr_conv_7_copy = Event_clone(&ret_var.data[h]);
+               long arr_conv_7_ref = (long)arr_conv_7_copy;
+               ret_arr_ptr[h] = arr_conv_7_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       CVec_EventZ_free(ret_var);
+       return ret_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1latest_1holder_1commitment_1txn(JNIEnv * _env, jclass _b, jlong this_arg, jlong logger) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1get_1latest_1holder_1commitment_1txn(JNIEnv * _env, jclass _b, jlong this_arg, jlong logger) {
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKLogger* logger_conv = (LDKLogger*)logger;
-       LDKCVec_TransactionZ* ret = MALLOC(sizeof(LDKCVec_TransactionZ), "LDKCVec_TransactionZ");
-       *ret = ChannelMonitor_get_latest_holder_commitment_txn(this_arg_conv, logger_conv);
-       return (long)ret;
+       LDKCVec_TransactionZ ret_var = ChannelMonitor_get_latest_holder_commitment_txn(&this_arg_conv, logger_conv);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t n = 0; n < ret_var.datalen; n++) {
+               LDKTransaction *arr_conv_13_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+               *arr_conv_13_copy = ret_var.data[n];
+               long arr_conv_13_ref = (long)arr_conv_13_copy;
+               ret_arr_ptr[n] = arr_conv_13_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       CVec_TransactionZ_free(ret_var);
+       return ret_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1block_1connected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jlong txdata, jint height, jlong broadcaster, jlong fee_estimator, jlong logger) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1block_1connected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jlongArray txdata, jint height, jlong broadcaster, jlong fee_estimator, jlong logger) {
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char header_arr[80];
+       CHECK((*_env)->GetArrayLength (_env, header) == 80);
        (*_env)->GetByteArrayRegion (_env, header, 0, 80, header_arr);
        unsigned char (*header_ref)[80] = &header_arr;
-       LDKCVec_C2Tuple_usizeTransactionZZ txdata_conv = *(LDKCVec_C2Tuple_usizeTransactionZZ*)txdata;
-       FREE((void*)txdata);
+       LDKCVec_C2Tuple_usizeTransactionZZ txdata_constr;
+       txdata_constr.datalen = (*_env)->GetArrayLength (_env, txdata);
+       if (txdata_constr.datalen > 0)
+               txdata_constr.data = MALLOC(txdata_constr.datalen * sizeof(LDKC2Tuple_usizeTransactionZ), "LDKCVec_C2Tuple_usizeTransactionZZ Elements");
+       else
+               txdata_constr.data = NULL;
+       long* txdata_vals = (*_env)->GetLongArrayElements (_env, txdata, NULL);
+       for (size_t d = 0; d < txdata_constr.datalen; d++) {
+               long arr_conv_29 = txdata_vals[d];
+               LDKC2Tuple_usizeTransactionZ arr_conv_29_conv = *(LDKC2Tuple_usizeTransactionZ*)arr_conv_29;
+               FREE((void*)arr_conv_29);
+               txdata_constr.data[d] = arr_conv_29_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, txdata, txdata_vals, 0);
        LDKBroadcasterInterface broadcaster_conv = *(LDKBroadcasterInterface*)broadcaster;
        if (broadcaster_conv.free == LDKBroadcasterInterface_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
@@ -2491,14 +6533,25 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1block_1connec
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(logger_conv.this_arg);
        }
-       LDKCVec_C2Tuple_TxidCVec_TxOutZZZ* ret = MALLOC(sizeof(LDKCVec_C2Tuple_TxidCVec_TxOutZZZ), "LDKCVec_C2Tuple_TxidCVec_TxOutZZZ");
-       *ret = ChannelMonitor_block_connected(this_arg_conv, header_ref, txdata_conv, height, broadcaster_conv, fee_estimator_conv, logger_conv);
-       return (long)ret;
+       LDKCVec_C2Tuple_TxidCVec_TxOutZZZ ret_var = ChannelMonitor_block_connected(&this_arg_conv, header_ref, txdata_constr, height, broadcaster_conv, fee_estimator_conv, logger_conv);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t b = 0; b < ret_var.datalen; b++) {
+               LDKC2Tuple_TxidCVec_TxOutZZ* arr_conv_27_ref = MALLOC(sizeof(LDKC2Tuple_TxidCVec_TxOutZZ), "LDKC2Tuple_TxidCVec_TxOutZZ");
+               *arr_conv_27_ref = ret_var.data[b];
+               ret_arr_ptr[b] = (long)arr_conv_27_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       CVec_C2Tuple_TxidCVec_TxOutZZZ_free(ret_var);
+       return ret_arr;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1block_1disconnected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jint height, jlong broadcaster, jlong fee_estimator, jlong logger) {
-       LDKChannelMonitor* this_arg_conv = (LDKChannelMonitor*)this_arg;
+       LDKChannelMonitor this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char header_arr[80];
+       CHECK((*_env)->GetArrayLength (_env, header) == 80);
        (*_env)->GetByteArrayRegion (_env, header, 0, 80, header_arr);
        unsigned char (*header_ref)[80] = &header_arr;
        LDKBroadcasterInterface broadcaster_conv = *(LDKBroadcasterInterface*)broadcaster;
@@ -2516,397 +6569,587 @@ JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMonitor_1block_1disconn
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(logger_conv.this_arg);
        }
-       return ChannelMonitor_block_disconnected(this_arg_conv, header_ref, height, broadcaster_conv, fee_estimator_conv, logger_conv);
+       ChannelMonitor_block_disconnected(&this_arg_conv, header_ref, height, broadcaster_conv, fee_estimator_conv, logger_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OutPoint_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOutPoint this_ptr_conv = *(LDKOutPoint*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return OutPoint_free(this_ptr_conv);
+       LDKOutPoint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OutPoint_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OutPoint_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKOutPoint orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKOutPoint ret_var = OutPoint_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OutPoint_1get_1txid(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOutPoint* this_ptr_conv = (LDKOutPoint*)this_ptr;
+       LDKOutPoint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *OutPoint_get_txid(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *OutPoint_get_txid(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OutPoint_1set_1txid(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOutPoint* this_ptr_conv = (LDKOutPoint*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return OutPoint_set_txid(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OutPoint_1set_1txid(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOutPoint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       OutPoint_set_txid(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_OutPoint_1get_1index(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOutPoint* this_ptr_conv = (LDKOutPoint*)this_ptr;
-       return OutPoint_get_index(this_ptr_conv);
+       LDKOutPoint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = OutPoint_get_index(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OutPoint_1set_1index(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKOutPoint* this_ptr_conv = (LDKOutPoint*)this_ptr;
-       return OutPoint_set_index(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OutPoint_1new(JNIEnv * _env, jclass _b, jlong txid_arg, jshort index_arg) {
-       LDKThirtyTwoBytes txid_arg_conv = *(LDKThirtyTwoBytes*)txid_arg;
-       FREE((void*)txid_arg);
-       LDKOutPoint* ret = MALLOC(sizeof(LDKOutPoint), "LDKOutPoint");
-       *ret = OutPoint_new(txid_arg_conv, index_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OutPoint_1to_1channel_1id(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKOutPoint* this_arg_conv = (LDKOutPoint*)this_arg;
-       LDKThirtyTwoBytes* ret = MALLOC(sizeof(LDKThirtyTwoBytes), "LDKThirtyTwoBytes");
-       *ret = OutPoint_to_channel_id(this_arg_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OutPoint_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKOutPoint* obj_conv = (LDKOutPoint*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = OutPoint_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OutPoint_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKOutPoint* ret = MALLOC(sizeof(LDKOutPoint), "LDKOutPoint");
-       *ret = OutPoint_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKOutPoint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OutPoint_set_index(&this_ptr_conv, val);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OutPoint_1new(JNIEnv * _env, jclass _b, jbyteArray txid_arg, jshort index_arg) {
+       LDKThirtyTwoBytes txid_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, txid_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, txid_arg, 0, 32, txid_arg_ref.data);
+       LDKOutPoint ret_var = OutPoint_new(txid_arg_ref, index_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OutPoint_1to_1channel_1id(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKOutPoint this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 32, OutPoint_to_channel_id(&this_arg_conv).data);
+       return arg_arr;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OutPoint_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKOutPoint obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = OutPoint_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OutPoint_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKOutPoint ret_var = OutPoint_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_SpendableOutputDescriptor_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKSpendableOutputDescriptor this_ptr_conv = *(LDKSpendableOutputDescriptor*)this_ptr;
        FREE((void*)this_ptr);
-       return SpendableOutputDescriptor_free(this_ptr_conv);
+       SpendableOutputDescriptor_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_SpendableOutputDescriptor_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKSpendableOutputDescriptor* orig_conv = (LDKSpendableOutputDescriptor*)orig;
+       LDKSpendableOutputDescriptor *ret_copy = MALLOC(sizeof(LDKSpendableOutputDescriptor), "LDKSpendableOutputDescriptor");
+       *ret_copy = SpendableOutputDescriptor_clone(orig_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKChannelKeys this_ptr_conv = *(LDKChannelKeys*)this_ptr;
        FREE((void*)this_ptr);
-       return ChannelKeys_free(this_ptr_conv);
+       ChannelKeys_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_KeysInterface_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKKeysInterface this_ptr_conv = *(LDKKeysInterface*)this_ptr;
        FREE((void*)this_ptr);
-       return KeysInterface_free(this_ptr_conv);
+       KeysInterface_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInMemoryChannelKeys this_ptr_conv = *(LDKInMemoryChannelKeys*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return InMemoryChannelKeys_free(this_ptr_conv);
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       InMemoryChannelKeys_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKInMemoryChannelKeys orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKInMemoryChannelKeys ret_var = InMemoryChannelKeys_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1get_1funding_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_funding_key(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_funding_key(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1funding_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
-       LDKSecretKey val_conv = *(LDKSecretKey*)val;
-       FREE((void*)val);
-       return InMemoryChannelKeys_set_funding_key(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1funding_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSecretKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.bytes);
+       InMemoryChannelKeys_set_funding_key(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1get_1revocation_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_revocation_base_key(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_revocation_base_key(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1revocation_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
-       LDKSecretKey val_conv = *(LDKSecretKey*)val;
-       FREE((void*)val);
-       return InMemoryChannelKeys_set_revocation_base_key(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1revocation_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSecretKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.bytes);
+       InMemoryChannelKeys_set_revocation_base_key(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1get_1payment_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_payment_key(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_payment_key(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1payment_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
-       LDKSecretKey val_conv = *(LDKSecretKey*)val;
-       FREE((void*)val);
-       return InMemoryChannelKeys_set_payment_key(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1payment_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSecretKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.bytes);
+       InMemoryChannelKeys_set_payment_key(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1get_1delayed_1payment_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_delayed_payment_base_key(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_delayed_payment_base_key(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1delayed_1payment_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
-       LDKSecretKey val_conv = *(LDKSecretKey*)val;
-       FREE((void*)val);
-       return InMemoryChannelKeys_set_delayed_payment_base_key(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1delayed_1payment_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSecretKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.bytes);
+       InMemoryChannelKeys_set_delayed_payment_base_key(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1get_1htlc_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_htlc_base_key(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_htlc_base_key(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1htlc_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
-       LDKSecretKey val_conv = *(LDKSecretKey*)val;
-       FREE((void*)val);
-       return InMemoryChannelKeys_set_htlc_base_key(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1htlc_1base_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSecretKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.bytes);
+       InMemoryChannelKeys_set_htlc_base_key(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1get_1commitment_1seed(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_commitment_seed(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *InMemoryChannelKeys_get_commitment_seed(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1commitment_1seed(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKInMemoryChannelKeys* this_ptr_conv = (LDKInMemoryChannelKeys*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return InMemoryChannelKeys_set_commitment_seed(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1new(JNIEnv * _env, jclass _b, jlong funding_key, jlong revocation_base_key, jlong payment_key, jlong delayed_payment_base_key, jlong htlc_base_key, jlong commitment_seed, jlong channel_value_satoshis, jlong key_derivation_params) {
-       LDKSecretKey funding_key_conv = *(LDKSecretKey*)funding_key;
-       FREE((void*)funding_key);
-       LDKSecretKey revocation_base_key_conv = *(LDKSecretKey*)revocation_base_key;
-       FREE((void*)revocation_base_key);
-       LDKSecretKey payment_key_conv = *(LDKSecretKey*)payment_key;
-       FREE((void*)payment_key);
-       LDKSecretKey delayed_payment_base_key_conv = *(LDKSecretKey*)delayed_payment_base_key;
-       FREE((void*)delayed_payment_base_key);
-       LDKSecretKey htlc_base_key_conv = *(LDKSecretKey*)htlc_base_key;
-       FREE((void*)htlc_base_key);
-       LDKThirtyTwoBytes commitment_seed_conv = *(LDKThirtyTwoBytes*)commitment_seed;
-       FREE((void*)commitment_seed);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1set_1commitment_1seed(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKInMemoryChannelKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       InMemoryChannelKeys_set_commitment_seed(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1new(JNIEnv * _env, jclass _b, jbyteArray funding_key, jbyteArray revocation_base_key, jbyteArray payment_key, jbyteArray delayed_payment_base_key, jbyteArray htlc_base_key, jbyteArray commitment_seed, jlong channel_value_satoshis, jlong key_derivation_params) {
+       LDKSecretKey funding_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, funding_key) == 32);
+       (*_env)->GetByteArrayRegion (_env, funding_key, 0, 32, funding_key_ref.bytes);
+       LDKSecretKey revocation_base_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, revocation_base_key) == 32);
+       (*_env)->GetByteArrayRegion (_env, revocation_base_key, 0, 32, revocation_base_key_ref.bytes);
+       LDKSecretKey payment_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_key) == 32);
+       (*_env)->GetByteArrayRegion (_env, payment_key, 0, 32, payment_key_ref.bytes);
+       LDKSecretKey delayed_payment_base_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, delayed_payment_base_key) == 32);
+       (*_env)->GetByteArrayRegion (_env, delayed_payment_base_key, 0, 32, delayed_payment_base_key_ref.bytes);
+       LDKSecretKey htlc_base_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, htlc_base_key) == 32);
+       (*_env)->GetByteArrayRegion (_env, htlc_base_key, 0, 32, htlc_base_key_ref.bytes);
+       LDKThirtyTwoBytes commitment_seed_ref;
+       CHECK((*_env)->GetArrayLength (_env, commitment_seed) == 32);
+       (*_env)->GetByteArrayRegion (_env, commitment_seed, 0, 32, commitment_seed_ref.data);
        LDKC2Tuple_u64u64Z key_derivation_params_conv = *(LDKC2Tuple_u64u64Z*)key_derivation_params;
        FREE((void*)key_derivation_params);
-       LDKInMemoryChannelKeys* ret = MALLOC(sizeof(LDKInMemoryChannelKeys), "LDKInMemoryChannelKeys");
-       *ret = InMemoryChannelKeys_new(funding_key_conv, revocation_base_key_conv, payment_key_conv, delayed_payment_base_key_conv, htlc_base_key_conv, commitment_seed_conv, channel_value_satoshis, key_derivation_params_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKInMemoryChannelKeys ret_var = InMemoryChannelKeys_new(funding_key_ref, revocation_base_key_ref, payment_key_ref, delayed_payment_base_key_ref, htlc_base_key_ref, commitment_seed_ref, channel_value_satoshis, key_derivation_params_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1counterparty_1pubkeys(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKInMemoryChannelKeys* this_arg_conv = (LDKInMemoryChannelKeys*)this_arg;
-       LDKChannelPublicKeys* ret = MALLOC(sizeof(LDKChannelPublicKeys), "LDKChannelPublicKeys");
-       *ret = InMemoryChannelKeys_counterparty_pubkeys(this_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKInMemoryChannelKeys this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKChannelPublicKeys ret_var = InMemoryChannelKeys_counterparty_pubkeys(&this_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1counterparty_1selected_1contest_1delay(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKInMemoryChannelKeys* this_arg_conv = (LDKInMemoryChannelKeys*)this_arg;
-       return InMemoryChannelKeys_counterparty_selected_contest_delay(this_arg_conv);
+       LDKInMemoryChannelKeys this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       jshort ret_val = InMemoryChannelKeys_counterparty_selected_contest_delay(&this_arg_conv);
+       return ret_val;
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1holder_1selected_1contest_1delay(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKInMemoryChannelKeys* this_arg_conv = (LDKInMemoryChannelKeys*)this_arg;
-       return InMemoryChannelKeys_holder_selected_contest_delay(this_arg_conv);
+       LDKInMemoryChannelKeys this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       jshort ret_val = InMemoryChannelKeys_holder_selected_contest_delay(&this_arg_conv);
+       return ret_val;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1as_1ChannelKeys(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKInMemoryChannelKeys* this_arg_conv = (LDKInMemoryChannelKeys*)this_arg;
+       LDKInMemoryChannelKeys this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKChannelKeys* ret = MALLOC(sizeof(LDKChannelKeys), "LDKChannelKeys");
-       *ret = InMemoryChannelKeys_as_ChannelKeys(this_arg_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKInMemoryChannelKeys* obj_conv = (LDKInMemoryChannelKeys*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = InMemoryChannelKeys_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKInMemoryChannelKeys* ret = MALLOC(sizeof(LDKInMemoryChannelKeys), "LDKInMemoryChannelKeys");
-       *ret = InMemoryChannelKeys_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       *ret = InMemoryChannelKeys_as_ChannelKeys(&this_arg_conv);
+       return (long)ret;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKInMemoryChannelKeys obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = InMemoryChannelKeys_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_InMemoryChannelKeys_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKInMemoryChannelKeys ret_var = InMemoryChannelKeys_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_KeysManager_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKKeysManager this_ptr_conv = *(LDKKeysManager*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return KeysManager_free(this_ptr_conv);
+       LDKKeysManager this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       KeysManager_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_KeysManager_1new(JNIEnv * _env, jclass _b, jbyteArray seed, jclass network, jlong starting_time_secs, jint starting_time_nanos) {
        unsigned char seed_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, seed) == 32);
        (*_env)->GetByteArrayRegion (_env, seed, 0, 32, seed_arr);
        unsigned char (*seed_ref)[32] = &seed_arr;
        LDKNetwork network_conv = LDKNetwork_from_java(_env, network);
-       LDKKeysManager* ret = MALLOC(sizeof(LDKKeysManager), "LDKKeysManager");
-       *ret = KeysManager_new(seed_ref, network_conv, starting_time_secs, starting_time_nanos);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKKeysManager ret_var = KeysManager_new(seed_ref, network_conv, starting_time_secs, starting_time_nanos);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_KeysManager_1derive_1channel_1keys(JNIEnv * _env, jclass _b, jlong this_arg, jlong channel_value_satoshis, jlong params_1, jlong params_2) {
-       LDKKeysManager* this_arg_conv = (LDKKeysManager*)this_arg;
-       LDKInMemoryChannelKeys* ret = MALLOC(sizeof(LDKInMemoryChannelKeys), "LDKInMemoryChannelKeys");
-       *ret = KeysManager_derive_channel_keys(this_arg_conv, channel_value_satoshis, params_1, params_2);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKKeysManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKInMemoryChannelKeys ret_var = KeysManager_derive_channel_keys(&this_arg_conv, channel_value_satoshis, params_1, params_2);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_KeysManager_1as_1KeysInterface(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKKeysManager* this_arg_conv = (LDKKeysManager*)this_arg;
+       LDKKeysManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKKeysInterface* ret = MALLOC(sizeof(LDKKeysInterface), "LDKKeysInterface");
-       *ret = KeysManager_as_KeysInterface(this_arg_conv);
+       *ret = KeysManager_as_KeysInterface(&this_arg_conv);
        return (long)ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManager this_ptr_conv = *(LDKChannelManager*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelManager_free(this_ptr_conv);
+       LDKChannelManager this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelManager_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails this_ptr_conv = *(LDKChannelDetails*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelDetails_free(this_ptr_conv);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelDetails_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelDetails orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelDetails ret_var = ChannelDetails_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ChannelDetails_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ChannelDetails_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return ChannelDetails_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       ChannelDetails_set_channel_id(&this_ptr_conv, val_ref);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1remote_1network_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelDetails_get_remote_network_id(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1remote_1network_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelDetails_get_remote_network_id(&this_ptr_conv).compressed_form);
+       return arg_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1remote_1network_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelDetails_set_remote_network_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1remote_1network_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelDetails_set_remote_network_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1counterparty_1features(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       LDKInitFeatures* ret = MALLOC(sizeof(LDKInitFeatures), "LDKInitFeatures");
-       *ret = ChannelDetails_get_counterparty_features(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKInitFeatures ret_var = ChannelDetails_get_counterparty_features(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1counterparty_1features(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       LDKInitFeatures val_conv = *(LDKInitFeatures*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelDetails_set_counterparty_features(this_ptr_conv, val_conv);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKInitFeatures val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       ChannelDetails_set_counterparty_features(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1channel_1value_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_get_channel_value_satoshis(this_ptr_conv);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelDetails_get_channel_value_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1channel_1value_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_set_channel_value_satoshis(this_ptr_conv, val);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelDetails_set_channel_value_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1user_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_get_user_id(this_ptr_conv);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelDetails_get_user_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1user_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_set_user_id(this_ptr_conv, val);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelDetails_set_user_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1outbound_1capacity_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_get_outbound_capacity_msat(this_ptr_conv);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelDetails_get_outbound_capacity_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1outbound_1capacity_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_set_outbound_capacity_msat(this_ptr_conv, val);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelDetails_set_outbound_capacity_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1inbound_1capacity_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_get_inbound_capacity_msat(this_ptr_conv);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelDetails_get_inbound_capacity_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1inbound_1capacity_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_set_inbound_capacity_msat(this_ptr_conv, val);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelDetails_set_inbound_capacity_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1get_1is_1live(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_get_is_live(this_ptr_conv);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = ChannelDetails_get_is_live(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelDetails_1set_1is_1live(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKChannelDetails* this_ptr_conv = (LDKChannelDetails*)this_ptr;
-       return ChannelDetails_set_is_live(this_ptr_conv, val);
+       LDKChannelDetails this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelDetails_set_is_live(&this_ptr_conv, val);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PaymentSendFailure_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPaymentSendFailure this_ptr_conv = *(LDKPaymentSendFailure*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return PaymentSendFailure_free(this_ptr_conv);
+       LDKPaymentSendFailure this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       PaymentSendFailure_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1new(JNIEnv * _env, jclass _b, jclass network, jlong fee_est, jlong chain_monitor, jlong tx_broadcaster, jlong logger, jlong keys_manager, jlong config, jlong current_blockchain_height) {
@@ -2936,285 +7179,433 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1new(JNIEnv *
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKKeysInterface_JCalls_clone(keys_manager_conv.this_arg);
        }
-       LDKUserConfig config_conv = *(LDKUserConfig*)config;
-       FREE((void*)config);
-       config_conv.is_owned = true;
-       LDKChannelManager* ret = MALLOC(sizeof(LDKChannelManager), "LDKChannelManager");
-       *ret = ChannelManager_new(network_conv, fee_est_conv, chain_monitor_conv, tx_broadcaster_conv, logger_conv, keys_manager_conv, config_conv, current_blockchain_height);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1create_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jlong their_network_key, jlong channel_value_satoshis, jlong push_msat, jlong user_id, jlong override_config) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKPublicKey their_network_key_conv = *(LDKPublicKey*)their_network_key;
-       FREE((void*)their_network_key);
-       LDKUserConfig override_config_conv = *(LDKUserConfig*)override_config;
-       FREE((void*)override_config);
-       override_config_conv.is_owned = true;
-       LDKCResult_NoneAPIErrorZ* ret = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
-       *ret = ChannelManager_create_channel(this_arg_conv, their_network_key_conv, channel_value_satoshis, push_msat, user_id, override_config_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1list_1channels(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKCVec_ChannelDetailsZ* ret = MALLOC(sizeof(LDKCVec_ChannelDetailsZ), "LDKCVec_ChannelDetailsZ");
-       *ret = ChannelManager_list_channels(this_arg_conv);
-       return (long)ret;
+       LDKUserConfig config_conv;
+       config_conv.inner = (void*)(config & (~1));
+       config_conv.is_owned = (config & 1) || (config == 0);
+       if (config_conv.inner != NULL)
+               config_conv = UserConfig_clone(&config_conv);
+       LDKChannelManager ret_var = ChannelManager_new(network_conv, fee_est_conv, chain_monitor_conv, tx_broadcaster_conv, logger_conv, keys_manager_conv, config_conv, current_blockchain_height);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1create_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_network_key, jlong channel_value_satoshis, jlong push_msat, jlong user_id, jlong override_config) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKPublicKey their_network_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_network_key) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_network_key, 0, 33, their_network_key_ref.compressed_form);
+       LDKUserConfig override_config_conv;
+       override_config_conv.inner = (void*)(override_config & (~1));
+       override_config_conv.is_owned = (override_config & 1) || (override_config == 0);
+       if (override_config_conv.inner != NULL)
+               override_config_conv = UserConfig_clone(&override_config_conv);
+       LDKCResult_NoneAPIErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
+       *ret_conv = ChannelManager_create_channel(&this_arg_conv, their_network_key_ref, channel_value_satoshis, push_msat, user_id, override_config_conv);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_ChannelManager_1list_1channels(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKCVec_ChannelDetailsZ ret_var = ChannelManager_list_channels(&this_arg_conv);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t q = 0; q < ret_var.datalen; q++) {
+               LDKChannelDetails arr_conv_16_var = ret_var.data[q];
+               CHECK((((long)arr_conv_16_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+               CHECK((((long)&arr_conv_16_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+               long arr_conv_16_ref = (long)arr_conv_16_var.inner;
+               if (arr_conv_16_var.is_owned) {
+                       arr_conv_16_ref |= 1;
+               }
+               ret_arr_ptr[q] = arr_conv_16_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       FREE(ret_var.data);
+       return ret_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1list_1usable_1channels(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKCVec_ChannelDetailsZ* ret = MALLOC(sizeof(LDKCVec_ChannelDetailsZ), "LDKCVec_ChannelDetailsZ");
-       *ret = ChannelManager_list_usable_channels(this_arg_conv);
-       return (long)ret;
+JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_ChannelManager_1list_1usable_1channels(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKCVec_ChannelDetailsZ ret_var = ChannelManager_list_usable_channels(&this_arg_conv);
+       jlongArray ret_arr = (*_env)->NewLongArray(_env, ret_var.datalen);
+       jlong *ret_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, ret_arr, NULL);
+       for (size_t q = 0; q < ret_var.datalen; q++) {
+               LDKChannelDetails arr_conv_16_var = ret_var.data[q];
+               CHECK((((long)arr_conv_16_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+               CHECK((((long)&arr_conv_16_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+               long arr_conv_16_ref = (long)arr_conv_16_var.inner;
+               if (arr_conv_16_var.is_owned) {
+                       arr_conv_16_ref |= 1;
+               }
+               ret_arr_ptr[q] = arr_conv_16_ref;
+       }
+       (*_env)->ReleasePrimitiveArrayCritical(_env, ret_arr, ret_arr_ptr, 0);
+       FREE(ret_var.data);
+       return ret_arr;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1close_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray channel_id) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char channel_id_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, channel_id) == 32);
        (*_env)->GetByteArrayRegion (_env, channel_id, 0, 32, channel_id_arr);
        unsigned char (*channel_id_ref)[32] = &channel_id_arr;
-       LDKCResult_NoneAPIErrorZ* ret = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
-       *ret = ChannelManager_close_channel(this_arg_conv, channel_id_ref);
-       return (long)ret;
+       LDKCResult_NoneAPIErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NoneAPIErrorZ), "LDKCResult_NoneAPIErrorZ");
+       *ret_conv = ChannelManager_close_channel(&this_arg_conv, channel_id_ref);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1force_1close_1channel(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray channel_id) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char channel_id_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, channel_id) == 32);
        (*_env)->GetByteArrayRegion (_env, channel_id, 0, 32, channel_id_arr);
        unsigned char (*channel_id_ref)[32] = &channel_id_arr;
-       return ChannelManager_force_close_channel(this_arg_conv, channel_id_ref);
+       ChannelManager_force_close_channel(&this_arg_conv, channel_id_ref);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1force_1close_1all_1channels(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       return ChannelManager_force_close_all_channels(this_arg_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1send_1payment(JNIEnv * _env, jclass _b, jlong this_arg, jlong route, jlong payment_hash, jlong payment_secret) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKRoute* route_conv = (LDKRoute*)route;
-       LDKThirtyTwoBytes payment_hash_conv = *(LDKThirtyTwoBytes*)payment_hash;
-       FREE((void*)payment_hash);
-       LDKThirtyTwoBytes payment_secret_conv = *(LDKThirtyTwoBytes*)payment_secret;
-       FREE((void*)payment_secret);
-       LDKCResult_NonePaymentSendFailureZ* ret = MALLOC(sizeof(LDKCResult_NonePaymentSendFailureZ), "LDKCResult_NonePaymentSendFailureZ");
-       *ret = ChannelManager_send_payment(this_arg_conv, route_conv, payment_hash_conv, payment_secret_conv);
-       return (long)ret;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       ChannelManager_force_close_all_channels(&this_arg_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1send_1payment(JNIEnv * _env, jclass _b, jlong this_arg, jlong route, jbyteArray payment_hash, jbyteArray payment_secret) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKRoute route_conv;
+       route_conv.inner = (void*)(route & (~1));
+       route_conv.is_owned = (route & 1) || (route == 0);
+       LDKThirtyTwoBytes payment_hash_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_hash) == 32);
+       (*_env)->GetByteArrayRegion (_env, payment_hash, 0, 32, payment_hash_ref.data);
+       LDKThirtyTwoBytes payment_secret_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_secret) == 32);
+       (*_env)->GetByteArrayRegion (_env, payment_secret, 0, 32, payment_secret_ref.data);
+       LDKCResult_NonePaymentSendFailureZ* ret_conv = MALLOC(sizeof(LDKCResult_NonePaymentSendFailureZ), "LDKCResult_NonePaymentSendFailureZ");
+       *ret_conv = ChannelManager_send_payment(&this_arg_conv, &route_conv, payment_hash_ref, payment_secret_ref);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1funding_1transaction_1generated(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray temporary_channel_id, jlong funding_txo) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char temporary_channel_id_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, temporary_channel_id) == 32);
        (*_env)->GetByteArrayRegion (_env, temporary_channel_id, 0, 32, temporary_channel_id_arr);
        unsigned char (*temporary_channel_id_ref)[32] = &temporary_channel_id_arr;
-       LDKOutPoint funding_txo_conv = *(LDKOutPoint*)funding_txo;
-       FREE((void*)funding_txo);
-       funding_txo_conv.is_owned = true;
-       return ChannelManager_funding_transaction_generated(this_arg_conv, temporary_channel_id_ref, funding_txo_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1broadcast_1node_1announcement(JNIEnv * _env, jclass _b, jlong this_arg, jlong rgb, jlong alias, jlong addresses) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKThreeBytes rgb_conv = *(LDKThreeBytes*)rgb;
-       FREE((void*)rgb);
-       LDKThirtyTwoBytes alias_conv = *(LDKThirtyTwoBytes*)alias;
-       FREE((void*)alias);
-       LDKCVec_NetAddressZ addresses_conv = *(LDKCVec_NetAddressZ*)addresses;
-       FREE((void*)addresses);
-       return ChannelManager_broadcast_node_announcement(this_arg_conv, rgb_conv, alias_conv, addresses_conv);
+       LDKOutPoint funding_txo_conv;
+       funding_txo_conv.inner = (void*)(funding_txo & (~1));
+       funding_txo_conv.is_owned = (funding_txo & 1) || (funding_txo == 0);
+       if (funding_txo_conv.inner != NULL)
+               funding_txo_conv = OutPoint_clone(&funding_txo_conv);
+       ChannelManager_funding_transaction_generated(&this_arg_conv, temporary_channel_id_ref, funding_txo_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1broadcast_1node_1announcement(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray rgb, jbyteArray alias, jlongArray addresses) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKThreeBytes rgb_ref;
+       CHECK((*_env)->GetArrayLength (_env, rgb) == 3);
+       (*_env)->GetByteArrayRegion (_env, rgb, 0, 3, rgb_ref.data);
+       LDKThirtyTwoBytes alias_ref;
+       CHECK((*_env)->GetArrayLength (_env, alias) == 32);
+       (*_env)->GetByteArrayRegion (_env, alias, 0, 32, alias_ref.data);
+       LDKCVec_NetAddressZ addresses_constr;
+       addresses_constr.datalen = (*_env)->GetArrayLength (_env, addresses);
+       if (addresses_constr.datalen > 0)
+               addresses_constr.data = MALLOC(addresses_constr.datalen * sizeof(LDKNetAddress), "LDKCVec_NetAddressZ Elements");
+       else
+               addresses_constr.data = NULL;
+       long* addresses_vals = (*_env)->GetLongArrayElements (_env, addresses, NULL);
+       for (size_t m = 0; m < addresses_constr.datalen; m++) {
+               long arr_conv_12 = addresses_vals[m];
+               LDKNetAddress arr_conv_12_conv = *(LDKNetAddress*)arr_conv_12;
+               FREE((void*)arr_conv_12);
+               addresses_constr.data[m] = arr_conv_12_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, addresses, addresses_vals, 0);
+       ChannelManager_broadcast_node_announcement(&this_arg_conv, rgb_ref, alias_ref, addresses_constr);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1process_1pending_1htlc_1forwards(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       return ChannelManager_process_pending_htlc_forwards(this_arg_conv);
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       ChannelManager_process_pending_htlc_forwards(&this_arg_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1timer_1chan_1freshness_1every_1min(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       return ChannelManager_timer_chan_freshness_every_min(this_arg_conv);
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       ChannelManager_timer_chan_freshness_every_min(&this_arg_conv);
 }
 
-JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelManager_1fail_1htlc_1backwards(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray payment_hash, jlong payment_secret) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelManager_1fail_1htlc_1backwards(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray payment_hash, jbyteArray payment_secret) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char payment_hash_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, payment_hash) == 32);
        (*_env)->GetByteArrayRegion (_env, payment_hash, 0, 32, payment_hash_arr);
        unsigned char (*payment_hash_ref)[32] = &payment_hash_arr;
-       LDKThirtyTwoBytes payment_secret_conv = *(LDKThirtyTwoBytes*)payment_secret;
-       FREE((void*)payment_secret);
-       return ChannelManager_fail_htlc_backwards(this_arg_conv, payment_hash_ref, payment_secret_conv);
-}
-
-JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelManager_1claim_1funds(JNIEnv * _env, jclass _b, jlong this_arg, jlong payment_preimage, jlong payment_secret, jlong expected_amount) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKThirtyTwoBytes payment_preimage_conv = *(LDKThirtyTwoBytes*)payment_preimage;
-       FREE((void*)payment_preimage);
-       LDKThirtyTwoBytes payment_secret_conv = *(LDKThirtyTwoBytes*)payment_secret;
-       FREE((void*)payment_secret);
-       return ChannelManager_claim_funds(this_arg_conv, payment_preimage_conv, payment_secret_conv, expected_amount);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1get_1our_1node_1id(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelManager_get_our_node_id(this_arg_conv);
-       return (long)ret;
+       LDKThirtyTwoBytes payment_secret_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_secret) == 32);
+       (*_env)->GetByteArrayRegion (_env, payment_secret, 0, 32, payment_secret_ref.data);
+       jboolean ret_val = ChannelManager_fail_htlc_backwards(&this_arg_conv, payment_hash_ref, payment_secret_ref);
+       return ret_val;
+}
+
+JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ChannelManager_1claim_1funds(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray payment_preimage, jbyteArray payment_secret, jlong expected_amount) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKThirtyTwoBytes payment_preimage_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_preimage) == 32);
+       (*_env)->GetByteArrayRegion (_env, payment_preimage, 0, 32, payment_preimage_ref.data);
+       LDKThirtyTwoBytes payment_secret_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_secret) == 32);
+       (*_env)->GetByteArrayRegion (_env, payment_secret, 0, 32, payment_secret_ref.data);
+       jboolean ret_val = ChannelManager_claim_funds(&this_arg_conv, payment_preimage_ref, payment_secret_ref, expected_amount);
+       return ret_val;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelManager_1get_1our_1node_1id(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelManager_get_our_node_id(&this_arg_conv).compressed_form);
+       return arg_arr;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1channel_1monitor_1updated(JNIEnv * _env, jclass _b, jlong this_arg, jlong funding_txo, jlong highest_applied_update_id) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
-       LDKOutPoint* funding_txo_conv = (LDKOutPoint*)funding_txo;
-       return ChannelManager_channel_monitor_updated(this_arg_conv, funding_txo_conv, highest_applied_update_id);
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKOutPoint funding_txo_conv;
+       funding_txo_conv.inner = (void*)(funding_txo & (~1));
+       funding_txo_conv.is_owned = (funding_txo & 1) || (funding_txo == 0);
+       ChannelManager_channel_monitor_updated(&this_arg_conv, &funding_txo_conv, highest_applied_update_id);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1as_1MessageSendEventsProvider(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKMessageSendEventsProvider* ret = MALLOC(sizeof(LDKMessageSendEventsProvider), "LDKMessageSendEventsProvider");
-       *ret = ChannelManager_as_MessageSendEventsProvider(this_arg_conv);
+       *ret = ChannelManager_as_MessageSendEventsProvider(&this_arg_conv);
        return (long)ret;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1as_1EventsProvider(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKEventsProvider* ret = MALLOC(sizeof(LDKEventsProvider), "LDKEventsProvider");
-       *ret = ChannelManager_as_EventsProvider(this_arg_conv);
+       *ret = ChannelManager_as_EventsProvider(&this_arg_conv);
        return (long)ret;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1block_1connected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jlong txdata, jint height) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1block_1connected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header, jlongArray txdata, jint height) {
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char header_arr[80];
+       CHECK((*_env)->GetArrayLength (_env, header) == 80);
        (*_env)->GetByteArrayRegion (_env, header, 0, 80, header_arr);
        unsigned char (*header_ref)[80] = &header_arr;
-       LDKCVec_C2Tuple_usizeTransactionZZ txdata_conv = *(LDKCVec_C2Tuple_usizeTransactionZZ*)txdata;
-       FREE((void*)txdata);
-       return ChannelManager_block_connected(this_arg_conv, header_ref, txdata_conv, height);
+       LDKCVec_C2Tuple_usizeTransactionZZ txdata_constr;
+       txdata_constr.datalen = (*_env)->GetArrayLength (_env, txdata);
+       if (txdata_constr.datalen > 0)
+               txdata_constr.data = MALLOC(txdata_constr.datalen * sizeof(LDKC2Tuple_usizeTransactionZ), "LDKCVec_C2Tuple_usizeTransactionZZ Elements");
+       else
+               txdata_constr.data = NULL;
+       long* txdata_vals = (*_env)->GetLongArrayElements (_env, txdata, NULL);
+       for (size_t d = 0; d < txdata_constr.datalen; d++) {
+               long arr_conv_29 = txdata_vals[d];
+               LDKC2Tuple_usizeTransactionZ arr_conv_29_conv = *(LDKC2Tuple_usizeTransactionZ*)arr_conv_29;
+               FREE((void*)arr_conv_29);
+               txdata_constr.data[d] = arr_conv_29_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, txdata, txdata_vals, 0);
+       ChannelManager_block_connected(&this_arg_conv, header_ref, txdata_constr, height);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManager_1block_1disconnected(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray header) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char header_arr[80];
+       CHECK((*_env)->GetArrayLength (_env, header) == 80);
        (*_env)->GetByteArrayRegion (_env, header, 0, 80, header_arr);
        unsigned char (*header_ref)[80] = &header_arr;
-       return ChannelManager_block_disconnected(this_arg_conv, header_ref);
+       ChannelManager_block_disconnected(&this_arg_conv, header_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManager_1as_1ChannelMessageHandler(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKChannelManager* this_arg_conv = (LDKChannelManager*)this_arg;
+       LDKChannelManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKChannelMessageHandler* ret = MALLOC(sizeof(LDKChannelMessageHandler), "LDKChannelMessageHandler");
-       *ret = ChannelManager_as_ChannelMessageHandler(this_arg_conv);
+       *ret = ChannelManager_as_ChannelMessageHandler(&this_arg_conv);
        return (long)ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManagerReadArgs this_ptr_conv = *(LDKChannelManagerReadArgs*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelManagerReadArgs_free(this_ptr_conv);
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelManagerReadArgs_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1get_1keys_1manager(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
-       long ret = (long)ChannelManagerReadArgs_get_keys_manager(this_ptr_conv);
-       return ret;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       long ret_ret = (long)ChannelManagerReadArgs_get_keys_manager(&this_ptr_conv);
+       return ret_ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1set_1keys_1manager(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKKeysInterface val_conv = *(LDKKeysInterface*)val;
        if (val_conv.free == LDKKeysInterface_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKKeysInterface_JCalls_clone(val_conv.this_arg);
        }
-       return ChannelManagerReadArgs_set_keys_manager(this_ptr_conv, val_conv);
+       ChannelManagerReadArgs_set_keys_manager(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1get_1fee_1estimator(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
-       long ret = (long)ChannelManagerReadArgs_get_fee_estimator(this_ptr_conv);
-       return ret;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       long ret_ret = (long)ChannelManagerReadArgs_get_fee_estimator(&this_ptr_conv);
+       return ret_ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1set_1fee_1estimator(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKFeeEstimator val_conv = *(LDKFeeEstimator*)val;
        if (val_conv.free == LDKFeeEstimator_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKFeeEstimator_JCalls_clone(val_conv.this_arg);
        }
-       return ChannelManagerReadArgs_set_fee_estimator(this_ptr_conv, val_conv);
+       ChannelManagerReadArgs_set_fee_estimator(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1get_1chain_1monitor(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
-       long ret = (long)ChannelManagerReadArgs_get_chain_monitor(this_ptr_conv);
-       return ret;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       long ret_ret = (long)ChannelManagerReadArgs_get_chain_monitor(&this_ptr_conv);
+       return ret_ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1set_1chain_1monitor(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKWatch val_conv = *(LDKWatch*)val;
        if (val_conv.free == LDKWatch_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKWatch_JCalls_clone(val_conv.this_arg);
        }
-       return ChannelManagerReadArgs_set_chain_monitor(this_ptr_conv, val_conv);
+       ChannelManagerReadArgs_set_chain_monitor(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1get_1tx_1broadcaster(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
-       long ret = (long)ChannelManagerReadArgs_get_tx_broadcaster(this_ptr_conv);
-       return ret;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       long ret_ret = (long)ChannelManagerReadArgs_get_tx_broadcaster(&this_ptr_conv);
+       return ret_ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1set_1tx_1broadcaster(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKBroadcasterInterface val_conv = *(LDKBroadcasterInterface*)val;
        if (val_conv.free == LDKBroadcasterInterface_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKBroadcasterInterface_JCalls_clone(val_conv.this_arg);
        }
-       return ChannelManagerReadArgs_set_tx_broadcaster(this_ptr_conv, val_conv);
+       ChannelManagerReadArgs_set_tx_broadcaster(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1get_1logger(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
-       long ret = (long)ChannelManagerReadArgs_get_logger(this_ptr_conv);
-       return ret;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       long ret_ret = (long)ChannelManagerReadArgs_get_logger(&this_ptr_conv);
+       return ret_ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1set_1logger(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKLogger val_conv = *(LDKLogger*)val;
        if (val_conv.free == LDKLogger_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(val_conv.this_arg);
        }
-       return ChannelManagerReadArgs_set_logger(this_ptr_conv, val_conv);
+       ChannelManagerReadArgs_set_logger(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1get_1default_1config(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
-       LDKUserConfig* ret = MALLOC(sizeof(LDKUserConfig), "LDKUserConfig");
-       *ret = ChannelManagerReadArgs_get_default_config(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUserConfig ret_var = ChannelManagerReadArgs_get_default_config(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1set_1default_1config(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelManagerReadArgs* this_ptr_conv = (LDKChannelManagerReadArgs*)this_ptr;
-       LDKUserConfig val_conv = *(LDKUserConfig*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelManagerReadArgs_set_default_config(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1new(JNIEnv * _env, jclass _b, jlong keys_manager, jlong fee_estimator, jlong chain_monitor, jlong tx_broadcaster, jlong logger, jlong default_config, jlong channel_monitors) {
+       LDKChannelManagerReadArgs this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUserConfig val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = UserConfig_clone(&val_conv);
+       ChannelManagerReadArgs_set_default_config(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1new(JNIEnv * _env, jclass _b, jlong keys_manager, jlong fee_estimator, jlong chain_monitor, jlong tx_broadcaster, jlong logger, jlong default_config, jlongArray channel_monitors) {
        LDKKeysInterface keys_manager_conv = *(LDKKeysInterface*)keys_manager;
        if (keys_manager_conv.free == LDKKeysInterface_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
@@ -3240,2783 +7631,4570 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelManagerReadArgs_1new(J
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(logger_conv.this_arg);
        }
-       LDKUserConfig default_config_conv = *(LDKUserConfig*)default_config;
-       FREE((void*)default_config);
-       default_config_conv.is_owned = true;
-       LDKCVec_ChannelMonitorZ channel_monitors_conv = *(LDKCVec_ChannelMonitorZ*)channel_monitors;
-       FREE((void*)channel_monitors);
-       LDKChannelManagerReadArgs* ret = MALLOC(sizeof(LDKChannelManagerReadArgs), "LDKChannelManagerReadArgs");
-       *ret = ChannelManagerReadArgs_new(keys_manager_conv, fee_estimator_conv, chain_monitor_conv, tx_broadcaster_conv, logger_conv, default_config_conv, channel_monitors_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUserConfig default_config_conv;
+       default_config_conv.inner = (void*)(default_config & (~1));
+       default_config_conv.is_owned = (default_config & 1) || (default_config == 0);
+       if (default_config_conv.inner != NULL)
+               default_config_conv = UserConfig_clone(&default_config_conv);
+       LDKCVec_ChannelMonitorZ channel_monitors_constr;
+       channel_monitors_constr.datalen = (*_env)->GetArrayLength (_env, channel_monitors);
+       if (channel_monitors_constr.datalen > 0)
+               channel_monitors_constr.data = MALLOC(channel_monitors_constr.datalen * sizeof(LDKChannelMonitor), "LDKCVec_ChannelMonitorZ Elements");
+       else
+               channel_monitors_constr.data = NULL;
+       long* channel_monitors_vals = (*_env)->GetLongArrayElements (_env, channel_monitors, NULL);
+       for (size_t q = 0; q < channel_monitors_constr.datalen; q++) {
+               long arr_conv_16 = channel_monitors_vals[q];
+               LDKChannelMonitor arr_conv_16_conv;
+               arr_conv_16_conv.inner = (void*)(arr_conv_16 & (~1));
+               arr_conv_16_conv.is_owned = (arr_conv_16 & 1) || (arr_conv_16 == 0);
+               channel_monitors_constr.data[q] = arr_conv_16_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, channel_monitors, channel_monitors_vals, 0);
+       LDKChannelManagerReadArgs ret_var = ChannelManagerReadArgs_new(keys_manager_conv, fee_estimator_conv, chain_monitor_conv, tx_broadcaster_conv, logger_conv, default_config_conv, channel_monitors_constr);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DecodeError_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDecodeError this_ptr_conv = *(LDKDecodeError*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return DecodeError_free(this_ptr_conv);
+       LDKDecodeError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       DecodeError_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Init_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInit this_ptr_conv = *(LDKInit*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return Init_free(this_ptr_conv);
+       LDKInit this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Init_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Init_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKInit orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKInit ret_var = Init_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKErrorMessage this_ptr_conv = *(LDKErrorMessage*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ErrorMessage_free(this_ptr_conv);
+       LDKErrorMessage this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ErrorMessage_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKErrorMessage orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKErrorMessage ret_var = ErrorMessage_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKErrorMessage* this_ptr_conv = (LDKErrorMessage*)this_ptr;
+       LDKErrorMessage this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ErrorMessage_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ErrorMessage_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKErrorMessage* this_ptr_conv = (LDKErrorMessage*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return ErrorMessage_set_channel_id(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1get_1data(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKErrorMessage* this_ptr_conv = (LDKErrorMessage*)this_ptr;
-       LDKStr* ret = MALLOC(sizeof(LDKStr), "LDKStr");
-       *ret = ErrorMessage_get_data(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1set_1data(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKErrorMessage* this_ptr_conv = (LDKErrorMessage*)this_ptr;
-       LDKCVec_u8Z val_conv = *(LDKCVec_u8Z*)val;
-       FREE((void*)val);
-       return ErrorMessage_set_data(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong data_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKCVec_u8Z data_arg_conv = *(LDKCVec_u8Z*)data_arg;
-       FREE((void*)data_arg);
-       LDKErrorMessage* ret = MALLOC(sizeof(LDKErrorMessage), "LDKErrorMessage");
-       *ret = ErrorMessage_new(channel_id_arg_conv, data_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKErrorMessage this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       ErrorMessage_set_channel_id(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jstring JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1get_1data(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKErrorMessage this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKStr _str = ErrorMessage_get_data(&this_ptr_conv);
+       char* _buf = MALLOC(_str.len + 1, "str conv buf");
+       memcpy(_buf, _str.chars, _str.len);
+       _buf[_str.len] = 0;
+       jstring _conv = (*_env)->NewStringUTF(_env, _str.chars);
+       FREE(_buf);
+       return _conv;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1set_1data(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKErrorMessage this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_u8Z val_ref;
+       val_ref.data = (*_env)->GetByteArrayElements (_env, val, NULL);
+       val_ref.datalen = (*_env)->GetArrayLength (_env, val);
+       ErrorMessage_set_data(&this_ptr_conv, val_ref);
+       (*_env)->ReleaseByteArrayElements(_env, val, (int8_t*)val_ref.data, 0);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jbyteArray data_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKCVec_u8Z data_arg_ref;
+       data_arg_ref.data = (*_env)->GetByteArrayElements (_env, data_arg, NULL);
+       data_arg_ref.datalen = (*_env)->GetArrayLength (_env, data_arg);
+       LDKErrorMessage ret_var = ErrorMessage_new(channel_id_arg_ref, data_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, data_arg, (int8_t*)data_arg_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Ping_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPing this_ptr_conv = *(LDKPing*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return Ping_free(this_ptr_conv);
+       LDKPing this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Ping_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Ping_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKPing orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKPing ret_var = Ping_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_Ping_1get_1ponglen(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPing* this_ptr_conv = (LDKPing*)this_ptr;
-       return Ping_get_ponglen(this_ptr_conv);
+       LDKPing this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = Ping_get_ponglen(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Ping_1set_1ponglen(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKPing* this_ptr_conv = (LDKPing*)this_ptr;
-       return Ping_set_ponglen(this_ptr_conv, val);
+       LDKPing this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Ping_set_ponglen(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_Ping_1get_1byteslen(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPing* this_ptr_conv = (LDKPing*)this_ptr;
-       return Ping_get_byteslen(this_ptr_conv);
+       LDKPing this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = Ping_get_byteslen(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Ping_1set_1byteslen(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKPing* this_ptr_conv = (LDKPing*)this_ptr;
-       return Ping_set_byteslen(this_ptr_conv, val);
+       LDKPing this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Ping_set_byteslen(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Ping_1new(JNIEnv * _env, jclass _b, jshort ponglen_arg, jshort byteslen_arg) {
-       LDKPing* ret = MALLOC(sizeof(LDKPing), "LDKPing");
-       *ret = Ping_new(ponglen_arg, byteslen_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKPing ret_var = Ping_new(ponglen_arg, byteslen_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Pong_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPong this_ptr_conv = *(LDKPong*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return Pong_free(this_ptr_conv);
+       LDKPong this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Pong_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Pong_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKPong orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKPong ret_var = Pong_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_Pong_1get_1byteslen(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPong* this_ptr_conv = (LDKPong*)this_ptr;
-       return Pong_get_byteslen(this_ptr_conv);
+       LDKPong this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = Pong_get_byteslen(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Pong_1set_1byteslen(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKPong* this_ptr_conv = (LDKPong*)this_ptr;
-       return Pong_set_byteslen(this_ptr_conv, val);
+       LDKPong this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Pong_set_byteslen(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Pong_1new(JNIEnv * _env, jclass _b, jshort byteslen_arg) {
-       LDKPong* ret = MALLOC(sizeof(LDKPong), "LDKPong");
-       *ret = Pong_new(byteslen_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKPong ret_var = Pong_new(byteslen_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel this_ptr_conv = *(LDKOpenChannel*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return OpenChannel_free(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKOpenChannel orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKOpenChannel ret_var = OpenChannel_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *OpenChannel_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *OpenChannel_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return OpenChannel_set_chain_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       OpenChannel_set_chain_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *OpenChannel_get_temporary_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *OpenChannel_get_temporary_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return OpenChannel_set_temporary_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       OpenChannel_set_temporary_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1funding_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_funding_satoshis(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = OpenChannel_get_funding_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1funding_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_funding_satoshis(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_funding_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1push_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_push_msat(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = OpenChannel_get_push_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1push_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_push_msat(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_push_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_dust_limit_satoshis(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = OpenChannel_get_dust_limit_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_dust_limit_satoshis(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_dust_limit_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1max_1htlc_1value_1in_1flight_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_max_htlc_value_in_flight_msat(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = OpenChannel_get_max_htlc_value_in_flight_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1max_1htlc_1value_1in_1flight_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_max_htlc_value_in_flight_msat(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_max_htlc_value_in_flight_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1channel_1reserve_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_channel_reserve_satoshis(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = OpenChannel_get_channel_reserve_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1channel_1reserve_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_channel_reserve_satoshis(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_channel_reserve_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_htlc_minimum_msat(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = OpenChannel_get_htlc_minimum_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_htlc_minimum_msat(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_htlc_minimum_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1feerate_1per_1kw(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_feerate_per_kw(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = OpenChannel_get_feerate_per_kw(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1feerate_1per_1kw(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_feerate_per_kw(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_feerate_per_kw(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_to_self_delay(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = OpenChannel_get_to_self_delay(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_to_self_delay(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_to_self_delay(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1max_1accepted_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_max_accepted_htlcs(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = OpenChannel_get_max_accepted_htlcs(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1max_1accepted_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_max_accepted_htlcs(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = OpenChannel_get_funding_pubkey(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return OpenChannel_set_funding_pubkey(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = OpenChannel_get_revocation_basepoint(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return OpenChannel_set_revocation_basepoint(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = OpenChannel_get_payment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return OpenChannel_set_payment_point(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = OpenChannel_get_delayed_payment_basepoint(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return OpenChannel_set_delayed_payment_basepoint(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = OpenChannel_get_htlc_basepoint(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return OpenChannel_set_htlc_basepoint(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = OpenChannel_get_first_per_commitment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return OpenChannel_set_first_per_commitment_point(this_ptr_conv, val_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_max_accepted_htlcs(&this_ptr_conv, val);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, OpenChannel_get_funding_pubkey(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       OpenChannel_set_funding_pubkey(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, OpenChannel_get_revocation_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       OpenChannel_set_revocation_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, OpenChannel_get_payment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       OpenChannel_set_payment_point(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, OpenChannel_get_delayed_payment_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       OpenChannel_set_delayed_payment_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, OpenChannel_get_htlc_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       OpenChannel_set_htlc_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, OpenChannel_get_first_per_commitment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       OpenChannel_set_first_per_commitment_point(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_OpenChannel_1get_1channel_1flags(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_get_channel_flags(this_ptr_conv);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyte ret_val = OpenChannel_get_channel_flags(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_OpenChannel_1set_1channel_1flags(JNIEnv * _env, jclass _b, jlong this_ptr, jbyte val) {
-       LDKOpenChannel* this_ptr_conv = (LDKOpenChannel*)this_ptr;
-       return OpenChannel_set_channel_flags(this_ptr_conv, val);
+       LDKOpenChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       OpenChannel_set_channel_flags(&this_ptr_conv, val);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel this_ptr_conv = *(LDKAcceptChannel*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return AcceptChannel_free(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKAcceptChannel orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKAcceptChannel ret_var = AcceptChannel_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *AcceptChannel_get_temporary_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *AcceptChannel_get_temporary_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return AcceptChannel_set_temporary_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       AcceptChannel_set_temporary_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_get_dust_limit_satoshis(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = AcceptChannel_get_dust_limit_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1dust_1limit_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_set_dust_limit_satoshis(this_ptr_conv, val);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_set_dust_limit_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1max_1htlc_1value_1in_1flight_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_get_max_htlc_value_in_flight_msat(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = AcceptChannel_get_max_htlc_value_in_flight_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1max_1htlc_1value_1in_1flight_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_set_max_htlc_value_in_flight_msat(this_ptr_conv, val);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_set_max_htlc_value_in_flight_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1channel_1reserve_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_get_channel_reserve_satoshis(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = AcceptChannel_get_channel_reserve_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1channel_1reserve_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_set_channel_reserve_satoshis(this_ptr_conv, val);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_set_channel_reserve_satoshis(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_get_htlc_minimum_msat(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = AcceptChannel_get_htlc_minimum_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_set_htlc_minimum_msat(this_ptr_conv, val);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_set_htlc_minimum_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_get_minimum_depth(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = AcceptChannel_get_minimum_depth(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1minimum_1depth(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_set_minimum_depth(this_ptr_conv, val);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_set_minimum_depth(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_get_to_self_delay(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = AcceptChannel_get_to_self_delay(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1to_1self_1delay(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_set_to_self_delay(this_ptr_conv, val);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_set_to_self_delay(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1max_1accepted_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_get_max_accepted_htlcs(this_ptr_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = AcceptChannel_get_max_accepted_htlcs(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1max_1accepted_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       return AcceptChannel_set_max_accepted_htlcs(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = AcceptChannel_get_funding_pubkey(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return AcceptChannel_set_funding_pubkey(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = AcceptChannel_get_revocation_basepoint(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return AcceptChannel_set_revocation_basepoint(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = AcceptChannel_get_payment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return AcceptChannel_set_payment_point(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = AcceptChannel_get_delayed_payment_basepoint(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return AcceptChannel_set_delayed_payment_basepoint(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = AcceptChannel_get_htlc_basepoint(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return AcceptChannel_set_htlc_basepoint(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = AcceptChannel_get_first_per_commitment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAcceptChannel* this_ptr_conv = (LDKAcceptChannel*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return AcceptChannel_set_first_per_commitment_point(this_ptr_conv, val_conv);
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AcceptChannel_set_max_accepted_htlcs(&this_ptr_conv, val);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, AcceptChannel_get_funding_pubkey(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       AcceptChannel_set_funding_pubkey(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, AcceptChannel_get_revocation_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       AcceptChannel_set_revocation_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, AcceptChannel_get_payment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       AcceptChannel_set_payment_point(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, AcceptChannel_get_delayed_payment_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       AcceptChannel_set_delayed_payment_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, AcceptChannel_get_htlc_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       AcceptChannel_set_htlc_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1get_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, AcceptChannel_get_first_per_commitment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1set_1first_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAcceptChannel this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       AcceptChannel_set_first_per_commitment_point(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingCreated this_ptr_conv = *(LDKFundingCreated*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return FundingCreated_free(this_ptr_conv);
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       FundingCreated_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingCreated_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKFundingCreated orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKFundingCreated ret_var = FundingCreated_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingCreated_1get_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingCreated_get_temporary_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingCreated_get_temporary_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1set_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return FundingCreated_set_temporary_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1set_1temporary_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       FundingCreated_set_temporary_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingCreated_1get_1funding_1txid(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingCreated_get_funding_txid(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingCreated_get_funding_txid(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1set_1funding_1txid(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return FundingCreated_set_funding_txid(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1set_1funding_1txid(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       FundingCreated_set_funding_txid(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_FundingCreated_1get_1funding_1output_1index(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
-       return FundingCreated_get_funding_output_index(this_ptr_conv);
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = FundingCreated_get_funding_output_index(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1set_1funding_1output_1index(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
-       return FundingCreated_set_funding_output_index(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingCreated_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = FundingCreated_get_signature(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKFundingCreated* this_ptr_conv = (LDKFundingCreated*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return FundingCreated_set_signature(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingCreated_1new(JNIEnv * _env, jclass _b, jlong temporary_channel_id_arg, jlong funding_txid_arg, jshort funding_output_index_arg, jlong signature_arg) {
-       LDKThirtyTwoBytes temporary_channel_id_arg_conv = *(LDKThirtyTwoBytes*)temporary_channel_id_arg;
-       FREE((void*)temporary_channel_id_arg);
-       LDKThirtyTwoBytes funding_txid_arg_conv = *(LDKThirtyTwoBytes*)funding_txid_arg;
-       FREE((void*)funding_txid_arg);
-       LDKSignature signature_arg_conv = *(LDKSignature*)signature_arg;
-       FREE((void*)signature_arg);
-       LDKFundingCreated* ret = MALLOC(sizeof(LDKFundingCreated), "LDKFundingCreated");
-       *ret = FundingCreated_new(temporary_channel_id_arg_conv, funding_txid_arg_conv, funding_output_index_arg, signature_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       FundingCreated_set_funding_output_index(&this_ptr_conv, val);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingCreated_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, FundingCreated_get_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingCreated_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKFundingCreated this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       FundingCreated_set_signature(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingCreated_1new(JNIEnv * _env, jclass _b, jbyteArray temporary_channel_id_arg, jbyteArray funding_txid_arg, jshort funding_output_index_arg, jbyteArray signature_arg) {
+       LDKThirtyTwoBytes temporary_channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, temporary_channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, temporary_channel_id_arg, 0, 32, temporary_channel_id_arg_ref.data);
+       LDKThirtyTwoBytes funding_txid_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, funding_txid_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, funding_txid_arg, 0, 32, funding_txid_arg_ref.data);
+       LDKSignature signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, signature_arg, 0, 64, signature_arg_ref.compact_form);
+       LDKFundingCreated ret_var = FundingCreated_new(temporary_channel_id_arg_ref, funding_txid_arg_ref, funding_output_index_arg, signature_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingSigned_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingSigned this_ptr_conv = *(LDKFundingSigned*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return FundingSigned_free(this_ptr_conv);
+       LDKFundingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       FundingSigned_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingSigned_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKFundingSigned orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKFundingSigned ret_var = FundingSigned_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingSigned_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingSigned* this_ptr_conv = (LDKFundingSigned*)this_ptr;
+       LDKFundingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingSigned_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingSigned_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingSigned_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKFundingSigned* this_ptr_conv = (LDKFundingSigned*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return FundingSigned_set_channel_id(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingSigned_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingSigned* this_ptr_conv = (LDKFundingSigned*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = FundingSigned_get_signature(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingSigned_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKFundingSigned* this_ptr_conv = (LDKFundingSigned*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return FundingSigned_set_signature(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingSigned_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong signature_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKSignature signature_arg_conv = *(LDKSignature*)signature_arg;
-       FREE((void*)signature_arg);
-       LDKFundingSigned* ret = MALLOC(sizeof(LDKFundingSigned), "LDKFundingSigned");
-       *ret = FundingSigned_new(channel_id_arg_conv, signature_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingSigned_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKFundingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       FundingSigned_set_channel_id(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingSigned_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKFundingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, FundingSigned_get_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingSigned_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKFundingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       FundingSigned_set_signature(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingSigned_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jbyteArray signature_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKSignature signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, signature_arg, 0, 64, signature_arg_ref.compact_form);
+       LDKFundingSigned ret_var = FundingSigned_new(channel_id_arg_ref, signature_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingLocked_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingLocked this_ptr_conv = *(LDKFundingLocked*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return FundingLocked_free(this_ptr_conv);
+       LDKFundingLocked this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       FundingLocked_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingLocked_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKFundingLocked orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKFundingLocked ret_var = FundingLocked_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingLocked_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingLocked* this_ptr_conv = (LDKFundingLocked*)this_ptr;
+       LDKFundingLocked this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingLocked_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *FundingLocked_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingLocked_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKFundingLocked* this_ptr_conv = (LDKFundingLocked*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return FundingLocked_set_channel_id(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingLocked_1get_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKFundingLocked* this_ptr_conv = (LDKFundingLocked*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = FundingLocked_get_next_per_commitment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingLocked_1set_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKFundingLocked* this_ptr_conv = (LDKFundingLocked*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return FundingLocked_set_next_per_commitment_point(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingLocked_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong next_per_commitment_point_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKPublicKey next_per_commitment_point_arg_conv = *(LDKPublicKey*)next_per_commitment_point_arg;
-       FREE((void*)next_per_commitment_point_arg);
-       LDKFundingLocked* ret = MALLOC(sizeof(LDKFundingLocked), "LDKFundingLocked");
-       *ret = FundingLocked_new(channel_id_arg_conv, next_per_commitment_point_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingLocked_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKFundingLocked this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       FundingLocked_set_channel_id(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingLocked_1get_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKFundingLocked this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, FundingLocked_get_next_per_commitment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_FundingLocked_1set_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKFundingLocked this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       FundingLocked_set_next_per_commitment_point(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingLocked_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jbyteArray next_per_commitment_point_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKPublicKey next_per_commitment_point_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, next_per_commitment_point_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, next_per_commitment_point_arg, 0, 33, next_per_commitment_point_arg_ref.compressed_form);
+       LDKFundingLocked ret_var = FundingLocked_new(channel_id_arg_ref, next_per_commitment_point_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Shutdown_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKShutdown this_ptr_conv = *(LDKShutdown*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return Shutdown_free(this_ptr_conv);
+       LDKShutdown this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Shutdown_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Shutdown_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKShutdown orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKShutdown ret_var = Shutdown_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_Shutdown_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKShutdown* this_ptr_conv = (LDKShutdown*)this_ptr;
+       LDKShutdown this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *Shutdown_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *Shutdown_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Shutdown_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKShutdown* this_ptr_conv = (LDKShutdown*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return Shutdown_set_channel_id(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Shutdown_1get_1scriptpubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKShutdown* this_ptr_conv = (LDKShutdown*)this_ptr;
-       LDKu8slice* ret = MALLOC(sizeof(LDKu8slice), "LDKu8slice");
-       *ret = Shutdown_get_scriptpubkey(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Shutdown_1set_1scriptpubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKShutdown* this_ptr_conv = (LDKShutdown*)this_ptr;
-       LDKCVec_u8Z val_conv = *(LDKCVec_u8Z*)val;
-       FREE((void*)val);
-       return Shutdown_set_scriptpubkey(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Shutdown_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong scriptpubkey_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKCVec_u8Z scriptpubkey_arg_conv = *(LDKCVec_u8Z*)scriptpubkey_arg;
-       FREE((void*)scriptpubkey_arg);
-       LDKShutdown* ret = MALLOC(sizeof(LDKShutdown), "LDKShutdown");
-       *ret = Shutdown_new(channel_id_arg_conv, scriptpubkey_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Shutdown_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKShutdown this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       Shutdown_set_channel_id(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_Shutdown_1get_1scriptpubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKShutdown this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKu8slice arg_var = Shutdown_get_scriptpubkey(&this_ptr_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Shutdown_1set_1scriptpubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKShutdown this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_u8Z val_ref;
+       val_ref.data = (*_env)->GetByteArrayElements (_env, val, NULL);
+       val_ref.datalen = (*_env)->GetArrayLength (_env, val);
+       Shutdown_set_scriptpubkey(&this_ptr_conv, val_ref);
+       (*_env)->ReleaseByteArrayElements(_env, val, (int8_t*)val_ref.data, 0);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Shutdown_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jbyteArray scriptpubkey_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKCVec_u8Z scriptpubkey_arg_ref;
+       scriptpubkey_arg_ref.data = (*_env)->GetByteArrayElements (_env, scriptpubkey_arg, NULL);
+       scriptpubkey_arg_ref.datalen = (*_env)->GetArrayLength (_env, scriptpubkey_arg);
+       LDKShutdown ret_var = Shutdown_new(channel_id_arg_ref, scriptpubkey_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, scriptpubkey_arg, (int8_t*)scriptpubkey_arg_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKClosingSigned this_ptr_conv = *(LDKClosingSigned*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ClosingSigned_free(this_ptr_conv);
+       LDKClosingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ClosingSigned_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKClosingSigned orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKClosingSigned ret_var = ClosingSigned_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKClosingSigned* this_ptr_conv = (LDKClosingSigned*)this_ptr;
+       LDKClosingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ClosingSigned_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ClosingSigned_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKClosingSigned* this_ptr_conv = (LDKClosingSigned*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return ClosingSigned_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKClosingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       ClosingSigned_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1get_1fee_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKClosingSigned* this_ptr_conv = (LDKClosingSigned*)this_ptr;
-       return ClosingSigned_get_fee_satoshis(this_ptr_conv);
+       LDKClosingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ClosingSigned_get_fee_satoshis(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1set_1fee_1satoshis(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKClosingSigned* this_ptr_conv = (LDKClosingSigned*)this_ptr;
-       return ClosingSigned_set_fee_satoshis(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKClosingSigned* this_ptr_conv = (LDKClosingSigned*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = ClosingSigned_get_signature(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKClosingSigned* this_ptr_conv = (LDKClosingSigned*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return ClosingSigned_set_signature(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong fee_satoshis_arg, jlong signature_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKSignature signature_arg_conv = *(LDKSignature*)signature_arg;
-       FREE((void*)signature_arg);
-       LDKClosingSigned* ret = MALLOC(sizeof(LDKClosingSigned), "LDKClosingSigned");
-       *ret = ClosingSigned_new(channel_id_arg_conv, fee_satoshis_arg, signature_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKClosingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ClosingSigned_set_fee_satoshis(&this_ptr_conv, val);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKClosingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, ClosingSigned_get_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKClosingSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       ClosingSigned_set_signature(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jlong fee_satoshis_arg, jbyteArray signature_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKSignature signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, signature_arg, 0, 64, signature_arg_ref.compact_form);
+       LDKClosingSigned ret_var = ClosingSigned_new(channel_id_arg_ref, fee_satoshis_arg, signature_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateAddHTLC this_ptr_conv = *(LDKUpdateAddHTLC*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UpdateAddHTLC_free(this_ptr_conv);
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateAddHTLC_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUpdateAddHTLC orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUpdateAddHTLC ret_var = UpdateAddHTLC_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateAddHTLC_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateAddHTLC_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UpdateAddHTLC_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UpdateAddHTLC_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1get_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       return UpdateAddHTLC_get_htlc_id(this_ptr_conv);
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UpdateAddHTLC_get_htlc_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1set_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       return UpdateAddHTLC_set_htlc_id(this_ptr_conv, val);
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateAddHTLC_set_htlc_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1get_1amount_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       return UpdateAddHTLC_get_amount_msat(this_ptr_conv);
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UpdateAddHTLC_get_amount_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1set_1amount_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       return UpdateAddHTLC_set_amount_msat(this_ptr_conv, val);
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateAddHTLC_set_amount_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1get_1payment_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateAddHTLC_get_payment_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateAddHTLC_get_payment_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1set_1payment_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UpdateAddHTLC_set_payment_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1set_1payment_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UpdateAddHTLC_set_payment_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1get_1cltv_1expiry(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       return UpdateAddHTLC_get_cltv_expiry(this_ptr_conv);
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = UpdateAddHTLC_get_cltv_expiry(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1set_1cltv_1expiry(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKUpdateAddHTLC* this_ptr_conv = (LDKUpdateAddHTLC*)this_ptr;
-       return UpdateAddHTLC_set_cltv_expiry(this_ptr_conv, val);
+       LDKUpdateAddHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateAddHTLC_set_cltv_expiry(&this_ptr_conv, val);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFulfillHTLC this_ptr_conv = *(LDKUpdateFulfillHTLC*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UpdateFulfillHTLC_free(this_ptr_conv);
+       LDKUpdateFulfillHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFulfillHTLC_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUpdateFulfillHTLC orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUpdateFulfillHTLC ret_var = UpdateFulfillHTLC_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFulfillHTLC* this_ptr_conv = (LDKUpdateFulfillHTLC*)this_ptr;
+       LDKUpdateFulfillHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFulfillHTLC_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFulfillHTLC_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFulfillHTLC* this_ptr_conv = (LDKUpdateFulfillHTLC*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UpdateFulfillHTLC_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUpdateFulfillHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UpdateFulfillHTLC_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1get_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFulfillHTLC* this_ptr_conv = (LDKUpdateFulfillHTLC*)this_ptr;
-       return UpdateFulfillHTLC_get_htlc_id(this_ptr_conv);
+       LDKUpdateFulfillHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UpdateFulfillHTLC_get_htlc_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1set_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFulfillHTLC* this_ptr_conv = (LDKUpdateFulfillHTLC*)this_ptr;
-       return UpdateFulfillHTLC_set_htlc_id(this_ptr_conv, val);
+       LDKUpdateFulfillHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFulfillHTLC_set_htlc_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1get_1payment_1preimage(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFulfillHTLC* this_ptr_conv = (LDKUpdateFulfillHTLC*)this_ptr;
+       LDKUpdateFulfillHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFulfillHTLC_get_payment_preimage(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFulfillHTLC_get_payment_preimage(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1set_1payment_1preimage(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFulfillHTLC* this_ptr_conv = (LDKUpdateFulfillHTLC*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UpdateFulfillHTLC_set_payment_preimage(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong htlc_id_arg, jlong payment_preimage_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKThirtyTwoBytes payment_preimage_arg_conv = *(LDKThirtyTwoBytes*)payment_preimage_arg;
-       FREE((void*)payment_preimage_arg);
-       LDKUpdateFulfillHTLC* ret = MALLOC(sizeof(LDKUpdateFulfillHTLC), "LDKUpdateFulfillHTLC");
-       *ret = UpdateFulfillHTLC_new(channel_id_arg_conv, htlc_id_arg, payment_preimage_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1set_1payment_1preimage(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUpdateFulfillHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UpdateFulfillHTLC_set_payment_preimage(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jlong htlc_id_arg, jbyteArray payment_preimage_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKThirtyTwoBytes payment_preimage_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_preimage_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, payment_preimage_arg, 0, 32, payment_preimage_arg_ref.data);
+       LDKUpdateFulfillHTLC ret_var = UpdateFulfillHTLC_new(channel_id_arg_ref, htlc_id_arg, payment_preimage_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFailHTLC this_ptr_conv = *(LDKUpdateFailHTLC*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UpdateFailHTLC_free(this_ptr_conv);
+       LDKUpdateFailHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFailHTLC_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUpdateFailHTLC orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUpdateFailHTLC ret_var = UpdateFailHTLC_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFailHTLC* this_ptr_conv = (LDKUpdateFailHTLC*)this_ptr;
+       LDKUpdateFailHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFailHTLC_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFailHTLC_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFailHTLC* this_ptr_conv = (LDKUpdateFailHTLC*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UpdateFailHTLC_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUpdateFailHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UpdateFailHTLC_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1get_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFailHTLC* this_ptr_conv = (LDKUpdateFailHTLC*)this_ptr;
-       return UpdateFailHTLC_get_htlc_id(this_ptr_conv);
+       LDKUpdateFailHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UpdateFailHTLC_get_htlc_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1set_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFailHTLC* this_ptr_conv = (LDKUpdateFailHTLC*)this_ptr;
-       return UpdateFailHTLC_set_htlc_id(this_ptr_conv, val);
+       LDKUpdateFailHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFailHTLC_set_htlc_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFailMalformedHTLC this_ptr_conv = *(LDKUpdateFailMalformedHTLC*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UpdateFailMalformedHTLC_free(this_ptr_conv);
+       LDKUpdateFailMalformedHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFailMalformedHTLC_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUpdateFailMalformedHTLC orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUpdateFailMalformedHTLC ret_var = UpdateFailMalformedHTLC_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFailMalformedHTLC* this_ptr_conv = (LDKUpdateFailMalformedHTLC*)this_ptr;
+       LDKUpdateFailMalformedHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFailMalformedHTLC_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFailMalformedHTLC_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFailMalformedHTLC* this_ptr_conv = (LDKUpdateFailMalformedHTLC*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UpdateFailMalformedHTLC_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUpdateFailMalformedHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UpdateFailMalformedHTLC_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1get_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFailMalformedHTLC* this_ptr_conv = (LDKUpdateFailMalformedHTLC*)this_ptr;
-       return UpdateFailMalformedHTLC_get_htlc_id(this_ptr_conv);
+       LDKUpdateFailMalformedHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UpdateFailMalformedHTLC_get_htlc_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1set_1htlc_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFailMalformedHTLC* this_ptr_conv = (LDKUpdateFailMalformedHTLC*)this_ptr;
-       return UpdateFailMalformedHTLC_set_htlc_id(this_ptr_conv, val);
+       LDKUpdateFailMalformedHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFailMalformedHTLC_set_htlc_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1get_1failure_1code(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFailMalformedHTLC* this_ptr_conv = (LDKUpdateFailMalformedHTLC*)this_ptr;
-       return UpdateFailMalformedHTLC_get_failure_code(this_ptr_conv);
+       LDKUpdateFailMalformedHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = UpdateFailMalformedHTLC_get_failure_code(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1set_1failure_1code(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKUpdateFailMalformedHTLC* this_ptr_conv = (LDKUpdateFailMalformedHTLC*)this_ptr;
-       return UpdateFailMalformedHTLC_set_failure_code(this_ptr_conv, val);
+       LDKUpdateFailMalformedHTLC this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFailMalformedHTLC_set_failure_code(&this_ptr_conv, val);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKCommitmentSigned this_ptr_conv = *(LDKCommitmentSigned*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return CommitmentSigned_free(this_ptr_conv);
+       LDKCommitmentSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       CommitmentSigned_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKCommitmentSigned orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKCommitmentSigned ret_var = CommitmentSigned_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKCommitmentSigned* this_ptr_conv = (LDKCommitmentSigned*)this_ptr;
+       LDKCommitmentSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *CommitmentSigned_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *CommitmentSigned_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentSigned* this_ptr_conv = (LDKCommitmentSigned*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return CommitmentSigned_set_channel_id(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKCommitmentSigned* this_ptr_conv = (LDKCommitmentSigned*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = CommitmentSigned_get_signature(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentSigned* this_ptr_conv = (LDKCommitmentSigned*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return CommitmentSigned_set_signature(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1set_1htlc_1signatures(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentSigned* this_ptr_conv = (LDKCommitmentSigned*)this_ptr;
-       LDKCVec_SignatureZ val_conv = *(LDKCVec_SignatureZ*)val;
-       FREE((void*)val);
-       return CommitmentSigned_set_htlc_signatures(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong signature_arg, jlong htlc_signatures_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKSignature signature_arg_conv = *(LDKSignature*)signature_arg;
-       FREE((void*)signature_arg);
-       LDKCVec_SignatureZ htlc_signatures_arg_conv = *(LDKCVec_SignatureZ*)htlc_signatures_arg;
-       FREE((void*)htlc_signatures_arg);
-       LDKCommitmentSigned* ret = MALLOC(sizeof(LDKCommitmentSigned), "LDKCommitmentSigned");
-       *ret = CommitmentSigned_new(channel_id_arg_conv, signature_arg_conv, htlc_signatures_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKCommitmentSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       CommitmentSigned_set_channel_id(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKCommitmentSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, CommitmentSigned_get_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKCommitmentSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       CommitmentSigned_set_signature(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1set_1htlc_1signatures(JNIEnv * _env, jclass _b, jlong this_ptr, jobjectArray val) {
+       LDKCommitmentSigned this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_SignatureZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKSignature), "LDKCVec_SignatureZ Elements");
+       else
+               val_constr.data = NULL;
+       for (size_t i = 0; i < val_constr.datalen; i++) {
+               jobject arr_conv_8 = (*_env)->GetObjectArrayElement(_env, val, i);
+               LDKSignature arr_conv_8_ref;
+               CHECK((*_env)->GetArrayLength (_env, arr_conv_8) == 64);
+               (*_env)->GetByteArrayRegion (_env, arr_conv_8, 0, 64, arr_conv_8_ref.compact_form);
+               val_constr.data[i] = arr_conv_8_ref;
+       }
+       CommitmentSigned_set_htlc_signatures(&this_ptr_conv, val_constr);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jbyteArray signature_arg, jobjectArray htlc_signatures_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKSignature signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, signature_arg, 0, 64, signature_arg_ref.compact_form);
+       LDKCVec_SignatureZ htlc_signatures_arg_constr;
+       htlc_signatures_arg_constr.datalen = (*_env)->GetArrayLength (_env, htlc_signatures_arg);
+       if (htlc_signatures_arg_constr.datalen > 0)
+               htlc_signatures_arg_constr.data = MALLOC(htlc_signatures_arg_constr.datalen * sizeof(LDKSignature), "LDKCVec_SignatureZ Elements");
+       else
+               htlc_signatures_arg_constr.data = NULL;
+       for (size_t i = 0; i < htlc_signatures_arg_constr.datalen; i++) {
+               jobject arr_conv_8 = (*_env)->GetObjectArrayElement(_env, htlc_signatures_arg, i);
+               LDKSignature arr_conv_8_ref;
+               CHECK((*_env)->GetArrayLength (_env, arr_conv_8) == 64);
+               (*_env)->GetByteArrayRegion (_env, arr_conv_8, 0, 64, arr_conv_8_ref.compact_form);
+               htlc_signatures_arg_constr.data[i] = arr_conv_8_ref;
+       }
+       LDKCommitmentSigned ret_var = CommitmentSigned_new(channel_id_arg_ref, signature_arg_ref, htlc_signatures_arg_constr);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRevokeAndACK this_ptr_conv = *(LDKRevokeAndACK*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return RevokeAndACK_free(this_ptr_conv);
+       LDKRevokeAndACK this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RevokeAndACK_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKRevokeAndACK orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKRevokeAndACK ret_var = RevokeAndACK_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRevokeAndACK* this_ptr_conv = (LDKRevokeAndACK*)this_ptr;
+       LDKRevokeAndACK this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *RevokeAndACK_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *RevokeAndACK_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRevokeAndACK* this_ptr_conv = (LDKRevokeAndACK*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return RevokeAndACK_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKRevokeAndACK this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       RevokeAndACK_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1get_1per_1commitment_1secret(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRevokeAndACK* this_ptr_conv = (LDKRevokeAndACK*)this_ptr;
+       LDKRevokeAndACK this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *RevokeAndACK_get_per_commitment_secret(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *RevokeAndACK_get_per_commitment_secret(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1set_1per_1commitment_1secret(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRevokeAndACK* this_ptr_conv = (LDKRevokeAndACK*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return RevokeAndACK_set_per_commitment_secret(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1get_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRevokeAndACK* this_ptr_conv = (LDKRevokeAndACK*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = RevokeAndACK_get_next_per_commitment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1set_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRevokeAndACK* this_ptr_conv = (LDKRevokeAndACK*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return RevokeAndACK_set_next_per_commitment_point(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong per_commitment_secret_arg, jlong next_per_commitment_point_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKThirtyTwoBytes per_commitment_secret_arg_conv = *(LDKThirtyTwoBytes*)per_commitment_secret_arg;
-       FREE((void*)per_commitment_secret_arg);
-       LDKPublicKey next_per_commitment_point_arg_conv = *(LDKPublicKey*)next_per_commitment_point_arg;
-       FREE((void*)next_per_commitment_point_arg);
-       LDKRevokeAndACK* ret = MALLOC(sizeof(LDKRevokeAndACK), "LDKRevokeAndACK");
-       *ret = RevokeAndACK_new(channel_id_arg_conv, per_commitment_secret_arg_conv, next_per_commitment_point_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1set_1per_1commitment_1secret(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKRevokeAndACK this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       RevokeAndACK_set_per_commitment_secret(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1get_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKRevokeAndACK this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, RevokeAndACK_get_next_per_commitment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1set_1next_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKRevokeAndACK this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       RevokeAndACK_set_next_per_commitment_point(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jbyteArray per_commitment_secret_arg, jbyteArray next_per_commitment_point_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKThirtyTwoBytes per_commitment_secret_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_secret_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_secret_arg, 0, 32, per_commitment_secret_arg_ref.data);
+       LDKPublicKey next_per_commitment_point_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, next_per_commitment_point_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, next_per_commitment_point_arg, 0, 33, next_per_commitment_point_arg_ref.compressed_form);
+       LDKRevokeAndACK ret_var = RevokeAndACK_new(channel_id_arg_ref, per_commitment_secret_arg_ref, next_per_commitment_point_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFee_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFee this_ptr_conv = *(LDKUpdateFee*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UpdateFee_free(this_ptr_conv);
+       LDKUpdateFee this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFee_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFee_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUpdateFee orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUpdateFee ret_var = UpdateFee_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFee_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFee* this_ptr_conv = (LDKUpdateFee*)this_ptr;
+       LDKUpdateFee this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFee_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UpdateFee_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFee_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUpdateFee* this_ptr_conv = (LDKUpdateFee*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UpdateFee_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFee_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUpdateFee this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UpdateFee_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_UpdateFee_1get_1feerate_1per_1kw(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUpdateFee* this_ptr_conv = (LDKUpdateFee*)this_ptr;
-       return UpdateFee_get_feerate_per_kw(this_ptr_conv);
+       LDKUpdateFee this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = UpdateFee_get_feerate_per_kw(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UpdateFee_1set_1feerate_1per_1kw(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKUpdateFee* this_ptr_conv = (LDKUpdateFee*)this_ptr;
-       return UpdateFee_set_feerate_per_kw(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFee_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jint feerate_per_kw_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKUpdateFee* ret = MALLOC(sizeof(LDKUpdateFee), "LDKUpdateFee");
-       *ret = UpdateFee_new(channel_id_arg_conv, feerate_per_kw_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUpdateFee this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UpdateFee_set_feerate_per_kw(&this_ptr_conv, val);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFee_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jint feerate_per_kw_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKUpdateFee ret_var = UpdateFee_new(channel_id_arg_ref, feerate_per_kw_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDataLossProtect this_ptr_conv = *(LDKDataLossProtect*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return DataLossProtect_free(this_ptr_conv);
+       LDKDataLossProtect this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       DataLossProtect_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKDataLossProtect orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKDataLossProtect ret_var = DataLossProtect_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1get_1your_1last_1per_1commitment_1secret(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDataLossProtect* this_ptr_conv = (LDKDataLossProtect*)this_ptr;
+       LDKDataLossProtect this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *DataLossProtect_get_your_last_per_commitment_secret(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *DataLossProtect_get_your_last_per_commitment_secret(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1set_1your_1last_1per_1commitment_1secret(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKDataLossProtect* this_ptr_conv = (LDKDataLossProtect*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return DataLossProtect_set_your_last_per_commitment_secret(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1get_1my_1current_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDataLossProtect* this_ptr_conv = (LDKDataLossProtect*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = DataLossProtect_get_my_current_per_commitment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1set_1my_1current_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKDataLossProtect* this_ptr_conv = (LDKDataLossProtect*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return DataLossProtect_set_my_current_per_commitment_point(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1new(JNIEnv * _env, jclass _b, jlong your_last_per_commitment_secret_arg, jlong my_current_per_commitment_point_arg) {
-       LDKThirtyTwoBytes your_last_per_commitment_secret_arg_conv = *(LDKThirtyTwoBytes*)your_last_per_commitment_secret_arg;
-       FREE((void*)your_last_per_commitment_secret_arg);
-       LDKPublicKey my_current_per_commitment_point_arg_conv = *(LDKPublicKey*)my_current_per_commitment_point_arg;
-       FREE((void*)my_current_per_commitment_point_arg);
-       LDKDataLossProtect* ret = MALLOC(sizeof(LDKDataLossProtect), "LDKDataLossProtect");
-       *ret = DataLossProtect_new(your_last_per_commitment_secret_arg_conv, my_current_per_commitment_point_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1set_1your_1last_1per_1commitment_1secret(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKDataLossProtect this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       DataLossProtect_set_your_last_per_commitment_secret(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1get_1my_1current_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKDataLossProtect this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, DataLossProtect_get_my_current_per_commitment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1set_1my_1current_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKDataLossProtect this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       DataLossProtect_set_my_current_per_commitment_point(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DataLossProtect_1new(JNIEnv * _env, jclass _b, jbyteArray your_last_per_commitment_secret_arg, jbyteArray my_current_per_commitment_point_arg) {
+       LDKThirtyTwoBytes your_last_per_commitment_secret_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, your_last_per_commitment_secret_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, your_last_per_commitment_secret_arg, 0, 32, your_last_per_commitment_secret_arg_ref.data);
+       LDKPublicKey my_current_per_commitment_point_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, my_current_per_commitment_point_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, my_current_per_commitment_point_arg, 0, 33, my_current_per_commitment_point_arg_ref.compressed_form);
+       LDKDataLossProtect ret_var = DataLossProtect_new(your_last_per_commitment_secret_arg_ref, my_current_per_commitment_point_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelReestablish this_ptr_conv = *(LDKChannelReestablish*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelReestablish_free(this_ptr_conv);
+       LDKChannelReestablish this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelReestablish_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelReestablish orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelReestablish ret_var = ChannelReestablish_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelReestablish* this_ptr_conv = (LDKChannelReestablish*)this_ptr;
+       LDKChannelReestablish this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ChannelReestablish_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ChannelReestablish_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelReestablish* this_ptr_conv = (LDKChannelReestablish*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return ChannelReestablish_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelReestablish this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       ChannelReestablish_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1get_1next_1local_1commitment_1number(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelReestablish* this_ptr_conv = (LDKChannelReestablish*)this_ptr;
-       return ChannelReestablish_get_next_local_commitment_number(this_ptr_conv);
+       LDKChannelReestablish this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelReestablish_get_next_local_commitment_number(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1set_1next_1local_1commitment_1number(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelReestablish* this_ptr_conv = (LDKChannelReestablish*)this_ptr;
-       return ChannelReestablish_set_next_local_commitment_number(this_ptr_conv, val);
+       LDKChannelReestablish this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelReestablish_set_next_local_commitment_number(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1get_1next_1remote_1commitment_1number(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelReestablish* this_ptr_conv = (LDKChannelReestablish*)this_ptr;
-       return ChannelReestablish_get_next_remote_commitment_number(this_ptr_conv);
+       LDKChannelReestablish this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = ChannelReestablish_get_next_remote_commitment_number(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1set_1next_1remote_1commitment_1number(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelReestablish* this_ptr_conv = (LDKChannelReestablish*)this_ptr;
-       return ChannelReestablish_set_next_remote_commitment_number(this_ptr_conv, val);
+       LDKChannelReestablish this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelReestablish_set_next_remote_commitment_number(&this_ptr_conv, val);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAnnouncementSignatures this_ptr_conv = *(LDKAnnouncementSignatures*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return AnnouncementSignatures_free(this_ptr_conv);
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AnnouncementSignatures_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKAnnouncementSignatures orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKAnnouncementSignatures ret_var = AnnouncementSignatures_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1get_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *AnnouncementSignatures_get_channel_id(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *AnnouncementSignatures_get_channel_id(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return AnnouncementSignatures_set_channel_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1set_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       AnnouncementSignatures_set_channel_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1get_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
-       return AnnouncementSignatures_get_short_channel_id(this_ptr_conv);
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = AnnouncementSignatures_get_short_channel_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1set_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
-       return AnnouncementSignatures_set_short_channel_id(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1get_1node_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = AnnouncementSignatures_get_node_signature(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1set_1node_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return AnnouncementSignatures_set_node_signature(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1get_1bitcoin_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = AnnouncementSignatures_get_bitcoin_signature(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1set_1bitcoin_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKAnnouncementSignatures* this_ptr_conv = (LDKAnnouncementSignatures*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return AnnouncementSignatures_set_bitcoin_signature(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1new(JNIEnv * _env, jclass _b, jlong channel_id_arg, jlong short_channel_id_arg, jlong node_signature_arg, jlong bitcoin_signature_arg) {
-       LDKThirtyTwoBytes channel_id_arg_conv = *(LDKThirtyTwoBytes*)channel_id_arg;
-       FREE((void*)channel_id_arg);
-       LDKSignature node_signature_arg_conv = *(LDKSignature*)node_signature_arg;
-       FREE((void*)node_signature_arg);
-       LDKSignature bitcoin_signature_arg_conv = *(LDKSignature*)bitcoin_signature_arg;
-       FREE((void*)bitcoin_signature_arg);
-       LDKAnnouncementSignatures* ret = MALLOC(sizeof(LDKAnnouncementSignatures), "LDKAnnouncementSignatures");
-       *ret = AnnouncementSignatures_new(channel_id_arg_conv, short_channel_id_arg, node_signature_arg_conv, bitcoin_signature_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       AnnouncementSignatures_set_short_channel_id(&this_ptr_conv, val);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1get_1node_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, AnnouncementSignatures_get_node_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1set_1node_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       AnnouncementSignatures_set_node_signature(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1get_1bitcoin_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, AnnouncementSignatures_get_bitcoin_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1set_1bitcoin_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKAnnouncementSignatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       AnnouncementSignatures_set_bitcoin_signature(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1new(JNIEnv * _env, jclass _b, jbyteArray channel_id_arg, jlong short_channel_id_arg, jbyteArray node_signature_arg, jbyteArray bitcoin_signature_arg) {
+       LDKThirtyTwoBytes channel_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, channel_id_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, channel_id_arg, 0, 32, channel_id_arg_ref.data);
+       LDKSignature node_signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, node_signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, node_signature_arg, 0, 64, node_signature_arg_ref.compact_form);
+       LDKSignature bitcoin_signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, bitcoin_signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, bitcoin_signature_arg, 0, 64, bitcoin_signature_arg_ref.compact_form);
+       LDKAnnouncementSignatures ret_var = AnnouncementSignatures_new(channel_id_arg_ref, short_channel_id_arg, node_signature_arg_ref, bitcoin_signature_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NetAddress_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKNetAddress this_ptr_conv = *(LDKNetAddress*)this_ptr;
        FREE((void*)this_ptr);
-       return NetAddress_free(this_ptr_conv);
+       NetAddress_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetAddress_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKNetAddress* orig_conv = (LDKNetAddress*)orig;
+       LDKNetAddress *ret_copy = MALLOC(sizeof(LDKNetAddress), "LDKNetAddress");
+       *ret_copy = NetAddress_clone(orig_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedNodeAnnouncement this_ptr_conv = *(LDKUnsignedNodeAnnouncement*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UnsignedNodeAnnouncement_free(this_ptr_conv);
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedNodeAnnouncement_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUnsignedNodeAnnouncement orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUnsignedNodeAnnouncement ret_var = UnsignedNodeAnnouncement_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1get_1features(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       LDKNodeFeatures* ret = MALLOC(sizeof(LDKNodeFeatures), "LDKNodeFeatures");
-       *ret = UnsignedNodeAnnouncement_get_features(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeFeatures ret_var = UnsignedNodeAnnouncement_get_features(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1features(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       LDKNodeFeatures val_conv = *(LDKNodeFeatures*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return UnsignedNodeAnnouncement_set_features(this_ptr_conv, val_conv);
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeFeatures val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       UnsignedNodeAnnouncement_set_features(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1get_1timestamp(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       return UnsignedNodeAnnouncement_get_timestamp(this_ptr_conv);
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = UnsignedNodeAnnouncement_get_timestamp(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1timestamp(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       return UnsignedNodeAnnouncement_set_timestamp(this_ptr_conv, val);
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedNodeAnnouncement_set_timestamp(&this_ptr_conv, val);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1get_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = UnsignedNodeAnnouncement_get_node_id(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1get_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, UnsignedNodeAnnouncement_get_node_id(&this_ptr_conv).compressed_form);
+       return arg_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return UnsignedNodeAnnouncement_set_node_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       UnsignedNodeAnnouncement_set_node_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1get_1rgb(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 3);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 3, *UnsignedNodeAnnouncement_get_rgb(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 3, *UnsignedNodeAnnouncement_get_rgb(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1rgb(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       LDKThreeBytes val_conv = *(LDKThreeBytes*)val;
-       FREE((void*)val);
-       return UnsignedNodeAnnouncement_set_rgb(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1rgb(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThreeBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 3);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 3, val_ref.data);
+       UnsignedNodeAnnouncement_set_rgb(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1get_1alias(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UnsignedNodeAnnouncement_get_alias(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UnsignedNodeAnnouncement_get_alias(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1alias(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UnsignedNodeAnnouncement_set_alias(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1addresses(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedNodeAnnouncement* this_ptr_conv = (LDKUnsignedNodeAnnouncement*)this_ptr;
-       LDKCVec_NetAddressZ val_conv = *(LDKCVec_NetAddressZ*)val;
-       FREE((void*)val);
-       return UnsignedNodeAnnouncement_set_addresses(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1alias(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UnsignedNodeAnnouncement_set_alias(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1set_1addresses(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKUnsignedNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_NetAddressZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKNetAddress), "LDKCVec_NetAddressZ Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t m = 0; m < val_constr.datalen; m++) {
+               long arr_conv_12 = val_vals[m];
+               LDKNetAddress arr_conv_12_conv = *(LDKNetAddress*)arr_conv_12;
+               FREE((void*)arr_conv_12);
+               val_constr.data[m] = arr_conv_12_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       UnsignedNodeAnnouncement_set_addresses(&this_ptr_conv, val_constr);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncement this_ptr_conv = *(LDKNodeAnnouncement*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return NodeAnnouncement_free(this_ptr_conv);
+       LDKNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       NodeAnnouncement_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKNodeAnnouncement orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKNodeAnnouncement ret_var = NodeAnnouncement_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncement* this_ptr_conv = (LDKNodeAnnouncement*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = NodeAnnouncement_get_signature(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, NodeAnnouncement_get_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeAnnouncement* this_ptr_conv = (LDKNodeAnnouncement*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return NodeAnnouncement_set_signature(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       NodeAnnouncement_set_signature(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1get_1contents(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncement* this_ptr_conv = (LDKNodeAnnouncement*)this_ptr;
-       LDKUnsignedNodeAnnouncement* ret = MALLOC(sizeof(LDKUnsignedNodeAnnouncement), "LDKUnsignedNodeAnnouncement");
-       *ret = NodeAnnouncement_get_contents(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUnsignedNodeAnnouncement ret_var = NodeAnnouncement_get_contents(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1set_1contents(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeAnnouncement* this_ptr_conv = (LDKNodeAnnouncement*)this_ptr;
-       LDKUnsignedNodeAnnouncement val_conv = *(LDKUnsignedNodeAnnouncement*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return NodeAnnouncement_set_contents(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1new(JNIEnv * _env, jclass _b, jlong signature_arg, jlong contents_arg) {
-       LDKSignature signature_arg_conv = *(LDKSignature*)signature_arg;
-       FREE((void*)signature_arg);
-       LDKUnsignedNodeAnnouncement contents_arg_conv = *(LDKUnsignedNodeAnnouncement*)contents_arg;
-       FREE((void*)contents_arg);
-       contents_arg_conv.is_owned = true;
-       LDKNodeAnnouncement* ret = MALLOC(sizeof(LDKNodeAnnouncement), "LDKNodeAnnouncement");
-       *ret = NodeAnnouncement_new(signature_arg_conv, contents_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUnsignedNodeAnnouncement val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = UnsignedNodeAnnouncement_clone(&val_conv);
+       NodeAnnouncement_set_contents(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1new(JNIEnv * _env, jclass _b, jbyteArray signature_arg, jlong contents_arg) {
+       LDKSignature signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, signature_arg, 0, 64, signature_arg_ref.compact_form);
+       LDKUnsignedNodeAnnouncement contents_arg_conv;
+       contents_arg_conv.inner = (void*)(contents_arg & (~1));
+       contents_arg_conv.is_owned = (contents_arg & 1) || (contents_arg == 0);
+       if (contents_arg_conv.inner != NULL)
+               contents_arg_conv = UnsignedNodeAnnouncement_clone(&contents_arg_conv);
+       LDKNodeAnnouncement ret_var = NodeAnnouncement_new(signature_arg_ref, contents_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement this_ptr_conv = *(LDKUnsignedChannelAnnouncement*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UnsignedChannelAnnouncement_free(this_ptr_conv);
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelAnnouncement_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUnsignedChannelAnnouncement orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUnsignedChannelAnnouncement ret_var = UnsignedChannelAnnouncement_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1features(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKChannelFeatures* ret = MALLOC(sizeof(LDKChannelFeatures), "LDKChannelFeatures");
-       *ret = UnsignedChannelAnnouncement_get_features(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelFeatures ret_var = UnsignedChannelAnnouncement_get_features(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1features(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKChannelFeatures val_conv = *(LDKChannelFeatures*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return UnsignedChannelAnnouncement_set_features(this_ptr_conv, val_conv);
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelFeatures val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       UnsignedChannelAnnouncement_set_features(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UnsignedChannelAnnouncement_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UnsignedChannelAnnouncement_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UnsignedChannelAnnouncement_set_chain_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UnsignedChannelAnnouncement_set_chain_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       return UnsignedChannelAnnouncement_get_short_channel_id(this_ptr_conv);
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UnsignedChannelAnnouncement_get_short_channel_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       return UnsignedChannelAnnouncement_set_short_channel_id(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1node_1id_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = UnsignedChannelAnnouncement_get_node_id_1(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1node_1id_11(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return UnsignedChannelAnnouncement_set_node_id_1(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1node_1id_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = UnsignedChannelAnnouncement_get_node_id_2(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1node_1id_12(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return UnsignedChannelAnnouncement_set_node_id_2(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1bitcoin_1key_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = UnsignedChannelAnnouncement_get_bitcoin_key_1(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1bitcoin_1key_11(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return UnsignedChannelAnnouncement_set_bitcoin_key_1(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1bitcoin_1key_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = UnsignedChannelAnnouncement_get_bitcoin_key_2(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1bitcoin_1key_12(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelAnnouncement* this_ptr_conv = (LDKUnsignedChannelAnnouncement*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return UnsignedChannelAnnouncement_set_bitcoin_key_2(this_ptr_conv, val_conv);
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelAnnouncement_set_short_channel_id(&this_ptr_conv, val);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1node_1id_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, UnsignedChannelAnnouncement_get_node_id_1(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1node_1id_11(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       UnsignedChannelAnnouncement_set_node_id_1(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1node_1id_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, UnsignedChannelAnnouncement_get_node_id_2(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1node_1id_12(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       UnsignedChannelAnnouncement_set_node_id_2(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1bitcoin_1key_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, UnsignedChannelAnnouncement_get_bitcoin_key_1(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1bitcoin_1key_11(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       UnsignedChannelAnnouncement_set_bitcoin_key_1(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1get_1bitcoin_1key_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, UnsignedChannelAnnouncement_get_bitcoin_key_2(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1set_1bitcoin_1key_12(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       UnsignedChannelAnnouncement_set_bitcoin_key_2(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelAnnouncement this_ptr_conv = *(LDKChannelAnnouncement*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelAnnouncement_free(this_ptr_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1node_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = ChannelAnnouncement_get_node_signature_1(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1node_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return ChannelAnnouncement_set_node_signature_1(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1node_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = ChannelAnnouncement_get_node_signature_2(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1node_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return ChannelAnnouncement_set_node_signature_2(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1bitcoin_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = ChannelAnnouncement_get_bitcoin_signature_1(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1bitcoin_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return ChannelAnnouncement_set_bitcoin_signature_1(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1bitcoin_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = ChannelAnnouncement_get_bitcoin_signature_2(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1bitcoin_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return ChannelAnnouncement_set_bitcoin_signature_2(this_ptr_conv, val_conv);
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelAnnouncement_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelAnnouncement orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelAnnouncement ret_var = ChannelAnnouncement_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1node_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, ChannelAnnouncement_get_node_signature_1(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1node_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       ChannelAnnouncement_set_node_signature_1(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1node_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, ChannelAnnouncement_get_node_signature_2(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1node_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       ChannelAnnouncement_set_node_signature_2(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1bitcoin_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, ChannelAnnouncement_get_bitcoin_signature_1(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1bitcoin_1signature_11(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       ChannelAnnouncement_set_bitcoin_signature_1(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1bitcoin_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, ChannelAnnouncement_get_bitcoin_signature_2(&this_ptr_conv).compact_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1bitcoin_1signature_12(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       ChannelAnnouncement_set_bitcoin_signature_2(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1get_1contents(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKUnsignedChannelAnnouncement* ret = MALLOC(sizeof(LDKUnsignedChannelAnnouncement), "LDKUnsignedChannelAnnouncement");
-       *ret = ChannelAnnouncement_get_contents(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUnsignedChannelAnnouncement ret_var = ChannelAnnouncement_get_contents(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1set_1contents(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelAnnouncement* this_ptr_conv = (LDKChannelAnnouncement*)this_ptr;
-       LDKUnsignedChannelAnnouncement val_conv = *(LDKUnsignedChannelAnnouncement*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelAnnouncement_set_contents(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1new(JNIEnv * _env, jclass _b, jlong node_signature_1_arg, jlong node_signature_2_arg, jlong bitcoin_signature_1_arg, jlong bitcoin_signature_2_arg, jlong contents_arg) {
-       LDKSignature node_signature_1_arg_conv = *(LDKSignature*)node_signature_1_arg;
-       FREE((void*)node_signature_1_arg);
-       LDKSignature node_signature_2_arg_conv = *(LDKSignature*)node_signature_2_arg;
-       FREE((void*)node_signature_2_arg);
-       LDKSignature bitcoin_signature_1_arg_conv = *(LDKSignature*)bitcoin_signature_1_arg;
-       FREE((void*)bitcoin_signature_1_arg);
-       LDKSignature bitcoin_signature_2_arg_conv = *(LDKSignature*)bitcoin_signature_2_arg;
-       FREE((void*)bitcoin_signature_2_arg);
-       LDKUnsignedChannelAnnouncement contents_arg_conv = *(LDKUnsignedChannelAnnouncement*)contents_arg;
-       FREE((void*)contents_arg);
-       contents_arg_conv.is_owned = true;
-       LDKChannelAnnouncement* ret = MALLOC(sizeof(LDKChannelAnnouncement), "LDKChannelAnnouncement");
-       *ret = ChannelAnnouncement_new(node_signature_1_arg_conv, node_signature_2_arg_conv, bitcoin_signature_1_arg_conv, bitcoin_signature_2_arg_conv, contents_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelAnnouncement this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUnsignedChannelAnnouncement val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = UnsignedChannelAnnouncement_clone(&val_conv);
+       ChannelAnnouncement_set_contents(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1new(JNIEnv * _env, jclass _b, jbyteArray node_signature_1_arg, jbyteArray node_signature_2_arg, jbyteArray bitcoin_signature_1_arg, jbyteArray bitcoin_signature_2_arg, jlong contents_arg) {
+       LDKSignature node_signature_1_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, node_signature_1_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, node_signature_1_arg, 0, 64, node_signature_1_arg_ref.compact_form);
+       LDKSignature node_signature_2_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, node_signature_2_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, node_signature_2_arg, 0, 64, node_signature_2_arg_ref.compact_form);
+       LDKSignature bitcoin_signature_1_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, bitcoin_signature_1_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, bitcoin_signature_1_arg, 0, 64, bitcoin_signature_1_arg_ref.compact_form);
+       LDKSignature bitcoin_signature_2_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, bitcoin_signature_2_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, bitcoin_signature_2_arg, 0, 64, bitcoin_signature_2_arg_ref.compact_form);
+       LDKUnsignedChannelAnnouncement contents_arg_conv;
+       contents_arg_conv.inner = (void*)(contents_arg & (~1));
+       contents_arg_conv.is_owned = (contents_arg & 1) || (contents_arg == 0);
+       if (contents_arg_conv.inner != NULL)
+               contents_arg_conv = UnsignedChannelAnnouncement_clone(&contents_arg_conv);
+       LDKChannelAnnouncement ret_var = ChannelAnnouncement_new(node_signature_1_arg_ref, node_signature_2_arg_ref, bitcoin_signature_1_arg_ref, bitcoin_signature_2_arg_ref, contents_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate this_ptr_conv = *(LDKUnsignedChannelUpdate*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return UnsignedChannelUpdate_free(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKUnsignedChannelUpdate orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKUnsignedChannelUpdate ret_var = UnsignedChannelUpdate_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UnsignedChannelUpdate_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *UnsignedChannelUpdate_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return UnsignedChannelUpdate_set_chain_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       UnsignedChannelUpdate_set_chain_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_get_short_channel_id(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UnsignedChannelUpdate_get_short_channel_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_set_short_channel_id(this_ptr_conv, val);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_set_short_channel_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1timestamp(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_get_timestamp(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = UnsignedChannelUpdate_get_timestamp(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1timestamp(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_set_timestamp(this_ptr_conv, val);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_set_timestamp(&this_ptr_conv, val);
 }
 
 JNIEXPORT jbyte JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1flags(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_get_flags(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyte ret_val = UnsignedChannelUpdate_get_flags(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1flags(JNIEnv * _env, jclass _b, jlong this_ptr, jbyte val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_set_flags(this_ptr_conv, val);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_set_flags(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_get_cltv_expiry_delta(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = UnsignedChannelUpdate_get_cltv_expiry_delta(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_set_cltv_expiry_delta(this_ptr_conv, val);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_set_cltv_expiry_delta(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_get_htlc_minimum_msat(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = UnsignedChannelUpdate_get_htlc_minimum_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_set_htlc_minimum_msat(this_ptr_conv, val);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_set_htlc_minimum_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1fee_1base_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_get_fee_base_msat(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = UnsignedChannelUpdate_get_fee_base_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1fee_1base_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_set_fee_base_msat(this_ptr_conv, val);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_set_fee_base_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1get_1fee_1proportional_1millionths(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_get_fee_proportional_millionths(this_ptr_conv);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = UnsignedChannelUpdate_get_fee_proportional_millionths(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1set_1fee_1proportional_1millionths(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKUnsignedChannelUpdate* this_ptr_conv = (LDKUnsignedChannelUpdate*)this_ptr;
-       return UnsignedChannelUpdate_set_fee_proportional_millionths(this_ptr_conv, val);
+       LDKUnsignedChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       UnsignedChannelUpdate_set_fee_proportional_millionths(&this_ptr_conv, val);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelUpdate this_ptr_conv = *(LDKChannelUpdate*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelUpdate_free(this_ptr_conv);
+       LDKChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelUpdate_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelUpdate orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelUpdate ret_var = ChannelUpdate_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelUpdate* this_ptr_conv = (LDKChannelUpdate*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = ChannelUpdate_get_signature(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1get_1signature(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, ChannelUpdate_get_signature(&this_ptr_conv).compact_form);
+       return arg_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelUpdate* this_ptr_conv = (LDKChannelUpdate*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return ChannelUpdate_set_signature(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1set_1signature(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       ChannelUpdate_set_signature(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1get_1contents(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelUpdate* this_ptr_conv = (LDKChannelUpdate*)this_ptr;
-       LDKUnsignedChannelUpdate* ret = MALLOC(sizeof(LDKUnsignedChannelUpdate), "LDKUnsignedChannelUpdate");
-       *ret = ChannelUpdate_get_contents(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUnsignedChannelUpdate ret_var = ChannelUpdate_get_contents(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1set_1contents(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelUpdate* this_ptr_conv = (LDKChannelUpdate*)this_ptr;
-       LDKUnsignedChannelUpdate val_conv = *(LDKUnsignedChannelUpdate*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelUpdate_set_contents(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1new(JNIEnv * _env, jclass _b, jlong signature_arg, jlong contents_arg) {
-       LDKSignature signature_arg_conv = *(LDKSignature*)signature_arg;
-       FREE((void*)signature_arg);
-       LDKUnsignedChannelUpdate contents_arg_conv = *(LDKUnsignedChannelUpdate*)contents_arg;
-       FREE((void*)contents_arg);
-       contents_arg_conv.is_owned = true;
-       LDKChannelUpdate* ret = MALLOC(sizeof(LDKChannelUpdate), "LDKChannelUpdate");
-       *ret = ChannelUpdate_new(signature_arg_conv, contents_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUnsignedChannelUpdate val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = UnsignedChannelUpdate_clone(&val_conv);
+       ChannelUpdate_set_contents(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1new(JNIEnv * _env, jclass _b, jbyteArray signature_arg, jlong contents_arg) {
+       LDKSignature signature_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, signature_arg) == 64);
+       (*_env)->GetByteArrayRegion (_env, signature_arg, 0, 64, signature_arg_ref.compact_form);
+       LDKUnsignedChannelUpdate contents_arg_conv;
+       contents_arg_conv.inner = (void*)(contents_arg & (~1));
+       contents_arg_conv.is_owned = (contents_arg & 1) || (contents_arg == 0);
+       if (contents_arg_conv.inner != NULL)
+               contents_arg_conv = UnsignedChannelUpdate_clone(&contents_arg_conv);
+       LDKChannelUpdate ret_var = ChannelUpdate_new(signature_arg_ref, contents_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKQueryChannelRange this_ptr_conv = *(LDKQueryChannelRange*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return QueryChannelRange_free(this_ptr_conv);
+       LDKQueryChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       QueryChannelRange_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKQueryChannelRange orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKQueryChannelRange ret_var = QueryChannelRange_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKQueryChannelRange* this_ptr_conv = (LDKQueryChannelRange*)this_ptr;
+       LDKQueryChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *QueryChannelRange_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *QueryChannelRange_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKQueryChannelRange* this_ptr_conv = (LDKQueryChannelRange*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return QueryChannelRange_set_chain_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKQueryChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       QueryChannelRange_set_chain_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1get_1first_1blocknum(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKQueryChannelRange* this_ptr_conv = (LDKQueryChannelRange*)this_ptr;
-       return QueryChannelRange_get_first_blocknum(this_ptr_conv);
+       LDKQueryChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = QueryChannelRange_get_first_blocknum(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1set_1first_1blocknum(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKQueryChannelRange* this_ptr_conv = (LDKQueryChannelRange*)this_ptr;
-       return QueryChannelRange_set_first_blocknum(this_ptr_conv, val);
+       LDKQueryChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       QueryChannelRange_set_first_blocknum(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1get_1number_1of_1blocks(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKQueryChannelRange* this_ptr_conv = (LDKQueryChannelRange*)this_ptr;
-       return QueryChannelRange_get_number_of_blocks(this_ptr_conv);
+       LDKQueryChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = QueryChannelRange_get_number_of_blocks(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1set_1number_1of_1blocks(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKQueryChannelRange* this_ptr_conv = (LDKQueryChannelRange*)this_ptr;
-       return QueryChannelRange_set_number_of_blocks(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1new(JNIEnv * _env, jclass _b, jlong chain_hash_arg, jint first_blocknum_arg, jint number_of_blocks_arg) {
-       LDKThirtyTwoBytes chain_hash_arg_conv = *(LDKThirtyTwoBytes*)chain_hash_arg;
-       FREE((void*)chain_hash_arg);
-       LDKQueryChannelRange* ret = MALLOC(sizeof(LDKQueryChannelRange), "LDKQueryChannelRange");
-       *ret = QueryChannelRange_new(chain_hash_arg_conv, first_blocknum_arg, number_of_blocks_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKQueryChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       QueryChannelRange_set_number_of_blocks(&this_ptr_conv, val);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1new(JNIEnv * _env, jclass _b, jbyteArray chain_hash_arg, jint first_blocknum_arg, jint number_of_blocks_arg) {
+       LDKThirtyTwoBytes chain_hash_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, chain_hash_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, chain_hash_arg, 0, 32, chain_hash_arg_ref.data);
+       LDKQueryChannelRange ret_var = QueryChannelRange_new(chain_hash_arg_ref, first_blocknum_arg, number_of_blocks_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyChannelRange this_ptr_conv = *(LDKReplyChannelRange*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ReplyChannelRange_free(this_ptr_conv);
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ReplyChannelRange_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKReplyChannelRange orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKReplyChannelRange ret_var = ReplyChannelRange_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ReplyChannelRange_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ReplyChannelRange_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return ReplyChannelRange_set_chain_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       ReplyChannelRange_set_chain_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1get_1first_1blocknum(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       return ReplyChannelRange_get_first_blocknum(this_ptr_conv);
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = ReplyChannelRange_get_first_blocknum(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1set_1first_1blocknum(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       return ReplyChannelRange_set_first_blocknum(this_ptr_conv, val);
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ReplyChannelRange_set_first_blocknum(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1get_1number_1of_1blocks(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       return ReplyChannelRange_get_number_of_blocks(this_ptr_conv);
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = ReplyChannelRange_get_number_of_blocks(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1set_1number_1of_1blocks(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       return ReplyChannelRange_set_number_of_blocks(this_ptr_conv, val);
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ReplyChannelRange_set_number_of_blocks(&this_ptr_conv, val);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1get_1full_1information(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       return ReplyChannelRange_get_full_information(this_ptr_conv);
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = ReplyChannelRange_get_full_information(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1set_1full_1information(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       return ReplyChannelRange_set_full_information(this_ptr_conv, val);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1set_1short_1channel_1ids(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKReplyChannelRange* this_ptr_conv = (LDKReplyChannelRange*)this_ptr;
-       LDKCVec_u64Z val_conv = *(LDKCVec_u64Z*)val;
-       FREE((void*)val);
-       return ReplyChannelRange_set_short_channel_ids(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1new(JNIEnv * _env, jclass _b, jlong chain_hash_arg, jint first_blocknum_arg, jint number_of_blocks_arg, jboolean full_information_arg, jlong short_channel_ids_arg) {
-       LDKThirtyTwoBytes chain_hash_arg_conv = *(LDKThirtyTwoBytes*)chain_hash_arg;
-       FREE((void*)chain_hash_arg);
-       LDKCVec_u64Z short_channel_ids_arg_conv = *(LDKCVec_u64Z*)short_channel_ids_arg;
-       FREE((void*)short_channel_ids_arg);
-       LDKReplyChannelRange* ret = MALLOC(sizeof(LDKReplyChannelRange), "LDKReplyChannelRange");
-       *ret = ReplyChannelRange_new(chain_hash_arg_conv, first_blocknum_arg, number_of_blocks_arg, full_information_arg, short_channel_ids_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ReplyChannelRange_set_full_information(&this_ptr_conv, val);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1set_1short_1channel_1ids(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKReplyChannelRange this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_u64Z val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(jlong), "LDKCVec_u64Z Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t g = 0; g < val_constr.datalen; g++) {
+               long arr_conv_6 = val_vals[g];
+               val_constr.data[g] = arr_conv_6;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       ReplyChannelRange_set_short_channel_ids(&this_ptr_conv, val_constr);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1new(JNIEnv * _env, jclass _b, jbyteArray chain_hash_arg, jint first_blocknum_arg, jint number_of_blocks_arg, jboolean full_information_arg, jlongArray short_channel_ids_arg) {
+       LDKThirtyTwoBytes chain_hash_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, chain_hash_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, chain_hash_arg, 0, 32, chain_hash_arg_ref.data);
+       LDKCVec_u64Z short_channel_ids_arg_constr;
+       short_channel_ids_arg_constr.datalen = (*_env)->GetArrayLength (_env, short_channel_ids_arg);
+       if (short_channel_ids_arg_constr.datalen > 0)
+               short_channel_ids_arg_constr.data = MALLOC(short_channel_ids_arg_constr.datalen * sizeof(jlong), "LDKCVec_u64Z Elements");
+       else
+               short_channel_ids_arg_constr.data = NULL;
+       long* short_channel_ids_arg_vals = (*_env)->GetLongArrayElements (_env, short_channel_ids_arg, NULL);
+       for (size_t g = 0; g < short_channel_ids_arg_constr.datalen; g++) {
+               long arr_conv_6 = short_channel_ids_arg_vals[g];
+               short_channel_ids_arg_constr.data[g] = arr_conv_6;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, short_channel_ids_arg, short_channel_ids_arg_vals, 0);
+       LDKReplyChannelRange ret_var = ReplyChannelRange_new(chain_hash_arg_ref, first_blocknum_arg, number_of_blocks_arg, full_information_arg, short_channel_ids_arg_constr);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKQueryShortChannelIds this_ptr_conv = *(LDKQueryShortChannelIds*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return QueryShortChannelIds_free(this_ptr_conv);
+       LDKQueryShortChannelIds this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       QueryShortChannelIds_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKQueryShortChannelIds orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKQueryShortChannelIds ret_var = QueryShortChannelIds_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKQueryShortChannelIds* this_ptr_conv = (LDKQueryShortChannelIds*)this_ptr;
+       LDKQueryShortChannelIds this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *QueryShortChannelIds_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *QueryShortChannelIds_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKQueryShortChannelIds* this_ptr_conv = (LDKQueryShortChannelIds*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return QueryShortChannelIds_set_chain_hash(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1set_1short_1channel_1ids(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKQueryShortChannelIds* this_ptr_conv = (LDKQueryShortChannelIds*)this_ptr;
-       LDKCVec_u64Z val_conv = *(LDKCVec_u64Z*)val;
-       FREE((void*)val);
-       return QueryShortChannelIds_set_short_channel_ids(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1new(JNIEnv * _env, jclass _b, jlong chain_hash_arg, jlong short_channel_ids_arg) {
-       LDKThirtyTwoBytes chain_hash_arg_conv = *(LDKThirtyTwoBytes*)chain_hash_arg;
-       FREE((void*)chain_hash_arg);
-       LDKCVec_u64Z short_channel_ids_arg_conv = *(LDKCVec_u64Z*)short_channel_ids_arg;
-       FREE((void*)short_channel_ids_arg);
-       LDKQueryShortChannelIds* ret = MALLOC(sizeof(LDKQueryShortChannelIds), "LDKQueryShortChannelIds");
-       *ret = QueryShortChannelIds_new(chain_hash_arg_conv, short_channel_ids_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKQueryShortChannelIds this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       QueryShortChannelIds_set_chain_hash(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1set_1short_1channel_1ids(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKQueryShortChannelIds this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_u64Z val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(jlong), "LDKCVec_u64Z Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t g = 0; g < val_constr.datalen; g++) {
+               long arr_conv_6 = val_vals[g];
+               val_constr.data[g] = arr_conv_6;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       QueryShortChannelIds_set_short_channel_ids(&this_ptr_conv, val_constr);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1new(JNIEnv * _env, jclass _b, jbyteArray chain_hash_arg, jlongArray short_channel_ids_arg) {
+       LDKThirtyTwoBytes chain_hash_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, chain_hash_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, chain_hash_arg, 0, 32, chain_hash_arg_ref.data);
+       LDKCVec_u64Z short_channel_ids_arg_constr;
+       short_channel_ids_arg_constr.datalen = (*_env)->GetArrayLength (_env, short_channel_ids_arg);
+       if (short_channel_ids_arg_constr.datalen > 0)
+               short_channel_ids_arg_constr.data = MALLOC(short_channel_ids_arg_constr.datalen * sizeof(jlong), "LDKCVec_u64Z Elements");
+       else
+               short_channel_ids_arg_constr.data = NULL;
+       long* short_channel_ids_arg_vals = (*_env)->GetLongArrayElements (_env, short_channel_ids_arg, NULL);
+       for (size_t g = 0; g < short_channel_ids_arg_constr.datalen; g++) {
+               long arr_conv_6 = short_channel_ids_arg_vals[g];
+               short_channel_ids_arg_constr.data[g] = arr_conv_6;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, short_channel_ids_arg, short_channel_ids_arg_vals, 0);
+       LDKQueryShortChannelIds ret_var = QueryShortChannelIds_new(chain_hash_arg_ref, short_channel_ids_arg_constr);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyShortChannelIdsEnd this_ptr_conv = *(LDKReplyShortChannelIdsEnd*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ReplyShortChannelIdsEnd_free(this_ptr_conv);
+       LDKReplyShortChannelIdsEnd this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ReplyShortChannelIdsEnd_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKReplyShortChannelIdsEnd orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKReplyShortChannelIdsEnd ret_var = ReplyShortChannelIdsEnd_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyShortChannelIdsEnd* this_ptr_conv = (LDKReplyShortChannelIdsEnd*)this_ptr;
+       LDKReplyShortChannelIdsEnd this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ReplyShortChannelIdsEnd_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *ReplyShortChannelIdsEnd_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKReplyShortChannelIdsEnd* this_ptr_conv = (LDKReplyShortChannelIdsEnd*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return ReplyShortChannelIdsEnd_set_chain_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKReplyShortChannelIdsEnd this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       ReplyShortChannelIdsEnd_set_chain_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1get_1full_1information(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKReplyShortChannelIdsEnd* this_ptr_conv = (LDKReplyShortChannelIdsEnd*)this_ptr;
-       return ReplyShortChannelIdsEnd_get_full_information(this_ptr_conv);
+       LDKReplyShortChannelIdsEnd this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = ReplyShortChannelIdsEnd_get_full_information(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1set_1full_1information(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKReplyShortChannelIdsEnd* this_ptr_conv = (LDKReplyShortChannelIdsEnd*)this_ptr;
-       return ReplyShortChannelIdsEnd_set_full_information(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1new(JNIEnv * _env, jclass _b, jlong chain_hash_arg, jboolean full_information_arg) {
-       LDKThirtyTwoBytes chain_hash_arg_conv = *(LDKThirtyTwoBytes*)chain_hash_arg;
-       FREE((void*)chain_hash_arg);
-       LDKReplyShortChannelIdsEnd* ret = MALLOC(sizeof(LDKReplyShortChannelIdsEnd), "LDKReplyShortChannelIdsEnd");
-       *ret = ReplyShortChannelIdsEnd_new(chain_hash_arg_conv, full_information_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKReplyShortChannelIdsEnd this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ReplyShortChannelIdsEnd_set_full_information(&this_ptr_conv, val);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1new(JNIEnv * _env, jclass _b, jbyteArray chain_hash_arg, jboolean full_information_arg) {
+       LDKThirtyTwoBytes chain_hash_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, chain_hash_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, chain_hash_arg, 0, 32, chain_hash_arg_ref.data);
+       LDKReplyShortChannelIdsEnd ret_var = ReplyShortChannelIdsEnd_new(chain_hash_arg_ref, full_information_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKGossipTimestampFilter this_ptr_conv = *(LDKGossipTimestampFilter*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return GossipTimestampFilter_free(this_ptr_conv);
+       LDKGossipTimestampFilter this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       GossipTimestampFilter_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKGossipTimestampFilter orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKGossipTimestampFilter ret_var = GossipTimestampFilter_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1get_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKGossipTimestampFilter* this_ptr_conv = (LDKGossipTimestampFilter*)this_ptr;
+       LDKGossipTimestampFilter this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *GossipTimestampFilter_get_chain_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *GossipTimestampFilter_get_chain_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKGossipTimestampFilter* this_ptr_conv = (LDKGossipTimestampFilter*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return GossipTimestampFilter_set_chain_hash(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1set_1chain_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKGossipTimestampFilter this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       GossipTimestampFilter_set_chain_hash(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1get_1first_1timestamp(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKGossipTimestampFilter* this_ptr_conv = (LDKGossipTimestampFilter*)this_ptr;
-       return GossipTimestampFilter_get_first_timestamp(this_ptr_conv);
+       LDKGossipTimestampFilter this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = GossipTimestampFilter_get_first_timestamp(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1set_1first_1timestamp(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKGossipTimestampFilter* this_ptr_conv = (LDKGossipTimestampFilter*)this_ptr;
-       return GossipTimestampFilter_set_first_timestamp(this_ptr_conv, val);
+       LDKGossipTimestampFilter this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       GossipTimestampFilter_set_first_timestamp(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1get_1timestamp_1range(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKGossipTimestampFilter* this_ptr_conv = (LDKGossipTimestampFilter*)this_ptr;
-       return GossipTimestampFilter_get_timestamp_range(this_ptr_conv);
+       LDKGossipTimestampFilter this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = GossipTimestampFilter_get_timestamp_range(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1set_1timestamp_1range(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKGossipTimestampFilter* this_ptr_conv = (LDKGossipTimestampFilter*)this_ptr;
-       return GossipTimestampFilter_set_timestamp_range(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1new(JNIEnv * _env, jclass _b, jlong chain_hash_arg, jint first_timestamp_arg, jint timestamp_range_arg) {
-       LDKThirtyTwoBytes chain_hash_arg_conv = *(LDKThirtyTwoBytes*)chain_hash_arg;
-       FREE((void*)chain_hash_arg);
-       LDKGossipTimestampFilter* ret = MALLOC(sizeof(LDKGossipTimestampFilter), "LDKGossipTimestampFilter");
-       *ret = GossipTimestampFilter_new(chain_hash_arg_conv, first_timestamp_arg, timestamp_range_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKGossipTimestampFilter this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       GossipTimestampFilter_set_timestamp_range(&this_ptr_conv, val);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1new(JNIEnv * _env, jclass _b, jbyteArray chain_hash_arg, jint first_timestamp_arg, jint timestamp_range_arg) {
+       LDKThirtyTwoBytes chain_hash_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, chain_hash_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, chain_hash_arg, 0, 32, chain_hash_arg_ref.data);
+       LDKGossipTimestampFilter ret_var = GossipTimestampFilter_new(chain_hash_arg_ref, first_timestamp_arg, timestamp_range_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ErrorAction_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKErrorAction this_ptr_conv = *(LDKErrorAction*)this_ptr;
        FREE((void*)this_ptr);
-       return ErrorAction_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_LightningError_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKLightningError this_ptr_conv = *(LDKLightningError*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return LightningError_free(this_ptr_conv);
+       ErrorAction_free(this_ptr_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LightningError_1get_1err(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKLightningError* this_ptr_conv = (LDKLightningError*)this_ptr;
-       LDKStr* ret = MALLOC(sizeof(LDKStr), "LDKStr");
-       *ret = LightningError_get_err(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorAction_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKErrorAction* orig_conv = (LDKErrorAction*)orig;
+       LDKErrorAction *ret_copy = MALLOC(sizeof(LDKErrorAction), "LDKErrorAction");
+       *ret_copy = ErrorAction_clone(orig_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_LightningError_1set_1err(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKLightningError* this_ptr_conv = (LDKLightningError*)this_ptr;
-       LDKCVec_u8Z val_conv = *(LDKCVec_u8Z*)val;
-       FREE((void*)val);
-       return LightningError_set_err(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_LightningError_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKLightningError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LightningError_free(this_ptr_conv);
+}
+
+JNIEXPORT jstring JNICALL Java_org_ldk_impl_bindings_LightningError_1get_1err(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKLightningError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKStr _str = LightningError_get_err(&this_ptr_conv);
+       char* _buf = MALLOC(_str.len + 1, "str conv buf");
+       memcpy(_buf, _str.chars, _str.len);
+       _buf[_str.len] = 0;
+       jstring _conv = (*_env)->NewStringUTF(_env, _str.chars);
+       FREE(_buf);
+       return _conv;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_LightningError_1set_1err(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKLightningError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_u8Z val_ref;
+       val_ref.data = (*_env)->GetByteArrayElements (_env, val, NULL);
+       val_ref.datalen = (*_env)->GetArrayLength (_env, val);
+       LightningError_set_err(&this_ptr_conv, val_ref);
+       (*_env)->ReleaseByteArrayElements(_env, val, (int8_t*)val_ref.data, 0);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LightningError_1get_1action(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKLightningError* this_ptr_conv = (LDKLightningError*)this_ptr;
-       LDKErrorAction* ret = MALLOC(sizeof(LDKErrorAction), "LDKErrorAction");
-       *ret = LightningError_get_action(this_ptr_conv);
-       return (long)ret;
+       LDKLightningError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKErrorAction *ret_copy = MALLOC(sizeof(LDKErrorAction), "LDKErrorAction");
+       *ret_copy = LightningError_get_action(&this_ptr_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_LightningError_1set_1action(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKLightningError* this_ptr_conv = (LDKLightningError*)this_ptr;
+       LDKLightningError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKErrorAction val_conv = *(LDKErrorAction*)val;
        FREE((void*)val);
-       return LightningError_set_action(this_ptr_conv, val_conv);
+       LightningError_set_action(&this_ptr_conv, val_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LightningError_1new(JNIEnv * _env, jclass _b, jlong err_arg, jlong action_arg) {
-       LDKCVec_u8Z err_arg_conv = *(LDKCVec_u8Z*)err_arg;
-       FREE((void*)err_arg);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LightningError_1new(JNIEnv * _env, jclass _b, jbyteArray err_arg, jlong action_arg) {
+       LDKCVec_u8Z err_arg_ref;
+       err_arg_ref.data = (*_env)->GetByteArrayElements (_env, err_arg, NULL);
+       err_arg_ref.datalen = (*_env)->GetArrayLength (_env, err_arg);
        LDKErrorAction action_arg_conv = *(LDKErrorAction*)action_arg;
        FREE((void*)action_arg);
-       LDKLightningError* ret = MALLOC(sizeof(LDKLightningError), "LDKLightningError");
-       *ret = LightningError_new(err_arg_conv, action_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKLightningError ret_var = LightningError_new(err_arg_ref, action_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, err_arg, (int8_t*)err_arg_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKCommitmentUpdate this_ptr_conv = *(LDKCommitmentUpdate*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return CommitmentUpdate_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1add_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKCVec_UpdateAddHTLCZ val_conv = *(LDKCVec_UpdateAddHTLCZ*)val;
-       FREE((void*)val);
-       return CommitmentUpdate_set_update_add_htlcs(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1fulfill_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKCVec_UpdateFulfillHTLCZ val_conv = *(LDKCVec_UpdateFulfillHTLCZ*)val;
-       FREE((void*)val);
-       return CommitmentUpdate_set_update_fulfill_htlcs(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1fail_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKCVec_UpdateFailHTLCZ val_conv = *(LDKCVec_UpdateFailHTLCZ*)val;
-       FREE((void*)val);
-       return CommitmentUpdate_set_update_fail_htlcs(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1fail_1malformed_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKCVec_UpdateFailMalformedHTLCZ val_conv = *(LDKCVec_UpdateFailMalformedHTLCZ*)val;
-       FREE((void*)val);
-       return CommitmentUpdate_set_update_fail_malformed_htlcs(this_ptr_conv, val_conv);
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       CommitmentUpdate_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKCommitmentUpdate orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKCommitmentUpdate ret_var = CommitmentUpdate_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1add_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_UpdateAddHTLCZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKUpdateAddHTLC), "LDKCVec_UpdateAddHTLCZ Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t p = 0; p < val_constr.datalen; p++) {
+               long arr_conv_15 = val_vals[p];
+               LDKUpdateAddHTLC arr_conv_15_conv;
+               arr_conv_15_conv.inner = (void*)(arr_conv_15 & (~1));
+               arr_conv_15_conv.is_owned = (arr_conv_15 & 1) || (arr_conv_15 == 0);
+               if (arr_conv_15_conv.inner != NULL)
+                       arr_conv_15_conv = UpdateAddHTLC_clone(&arr_conv_15_conv);
+               val_constr.data[p] = arr_conv_15_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       CommitmentUpdate_set_update_add_htlcs(&this_ptr_conv, val_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1fulfill_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_UpdateFulfillHTLCZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKUpdateFulfillHTLC), "LDKCVec_UpdateFulfillHTLCZ Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t t = 0; t < val_constr.datalen; t++) {
+               long arr_conv_19 = val_vals[t];
+               LDKUpdateFulfillHTLC arr_conv_19_conv;
+               arr_conv_19_conv.inner = (void*)(arr_conv_19 & (~1));
+               arr_conv_19_conv.is_owned = (arr_conv_19 & 1) || (arr_conv_19 == 0);
+               if (arr_conv_19_conv.inner != NULL)
+                       arr_conv_19_conv = UpdateFulfillHTLC_clone(&arr_conv_19_conv);
+               val_constr.data[t] = arr_conv_19_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       CommitmentUpdate_set_update_fulfill_htlcs(&this_ptr_conv, val_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1fail_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_UpdateFailHTLCZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKUpdateFailHTLC), "LDKCVec_UpdateFailHTLCZ Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t q = 0; q < val_constr.datalen; q++) {
+               long arr_conv_16 = val_vals[q];
+               LDKUpdateFailHTLC arr_conv_16_conv;
+               arr_conv_16_conv.inner = (void*)(arr_conv_16 & (~1));
+               arr_conv_16_conv.is_owned = (arr_conv_16 & 1) || (arr_conv_16 == 0);
+               if (arr_conv_16_conv.inner != NULL)
+                       arr_conv_16_conv = UpdateFailHTLC_clone(&arr_conv_16_conv);
+               val_constr.data[q] = arr_conv_16_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       CommitmentUpdate_set_update_fail_htlcs(&this_ptr_conv, val_constr);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1fail_1malformed_1htlcs(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_UpdateFailMalformedHTLCZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKUpdateFailMalformedHTLC), "LDKCVec_UpdateFailMalformedHTLCZ Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t z = 0; z < val_constr.datalen; z++) {
+               long arr_conv_25 = val_vals[z];
+               LDKUpdateFailMalformedHTLC arr_conv_25_conv;
+               arr_conv_25_conv.inner = (void*)(arr_conv_25 & (~1));
+               arr_conv_25_conv.is_owned = (arr_conv_25 & 1) || (arr_conv_25 == 0);
+               if (arr_conv_25_conv.inner != NULL)
+                       arr_conv_25_conv = UpdateFailMalformedHTLC_clone(&arr_conv_25_conv);
+               val_constr.data[z] = arr_conv_25_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       CommitmentUpdate_set_update_fail_malformed_htlcs(&this_ptr_conv, val_constr);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1get_1update_1fee(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKUpdateFee* ret = MALLOC(sizeof(LDKUpdateFee), "LDKUpdateFee");
-       *ret = CommitmentUpdate_get_update_fee(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUpdateFee ret_var = CommitmentUpdate_get_update_fee(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1update_1fee(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKUpdateFee val_conv = *(LDKUpdateFee*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return CommitmentUpdate_set_update_fee(this_ptr_conv, val_conv);
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKUpdateFee val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = UpdateFee_clone(&val_conv);
+       CommitmentUpdate_set_update_fee(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1get_1commitment_1signed(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKCommitmentSigned* ret = MALLOC(sizeof(LDKCommitmentSigned), "LDKCommitmentSigned");
-       *ret = CommitmentUpdate_get_commitment_signed(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCommitmentSigned ret_var = CommitmentUpdate_get_commitment_signed(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1set_1commitment_1signed(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKCommitmentUpdate* this_ptr_conv = (LDKCommitmentUpdate*)this_ptr;
-       LDKCommitmentSigned val_conv = *(LDKCommitmentSigned*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return CommitmentUpdate_set_commitment_signed(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1new(JNIEnv * _env, jclass _b, jlong update_add_htlcs_arg, jlong update_fulfill_htlcs_arg, jlong update_fail_htlcs_arg, jlong update_fail_malformed_htlcs_arg, jlong update_fee_arg, jlong commitment_signed_arg) {
-       LDKCVec_UpdateAddHTLCZ update_add_htlcs_arg_conv = *(LDKCVec_UpdateAddHTLCZ*)update_add_htlcs_arg;
-       FREE((void*)update_add_htlcs_arg);
-       LDKCVec_UpdateFulfillHTLCZ update_fulfill_htlcs_arg_conv = *(LDKCVec_UpdateFulfillHTLCZ*)update_fulfill_htlcs_arg;
-       FREE((void*)update_fulfill_htlcs_arg);
-       LDKCVec_UpdateFailHTLCZ update_fail_htlcs_arg_conv = *(LDKCVec_UpdateFailHTLCZ*)update_fail_htlcs_arg;
-       FREE((void*)update_fail_htlcs_arg);
-       LDKCVec_UpdateFailMalformedHTLCZ update_fail_malformed_htlcs_arg_conv = *(LDKCVec_UpdateFailMalformedHTLCZ*)update_fail_malformed_htlcs_arg;
-       FREE((void*)update_fail_malformed_htlcs_arg);
-       LDKUpdateFee update_fee_arg_conv = *(LDKUpdateFee*)update_fee_arg;
-       FREE((void*)update_fee_arg);
-       update_fee_arg_conv.is_owned = true;
-       LDKCommitmentSigned commitment_signed_arg_conv = *(LDKCommitmentSigned*)commitment_signed_arg;
-       FREE((void*)commitment_signed_arg);
-       commitment_signed_arg_conv.is_owned = true;
-       LDKCommitmentUpdate* ret = MALLOC(sizeof(LDKCommitmentUpdate), "LDKCommitmentUpdate");
-       *ret = CommitmentUpdate_new(update_add_htlcs_arg_conv, update_fulfill_htlcs_arg_conv, update_fail_htlcs_arg_conv, update_fail_malformed_htlcs_arg_conv, update_fee_arg_conv, commitment_signed_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKCommitmentUpdate this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCommitmentSigned val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = CommitmentSigned_clone(&val_conv);
+       CommitmentUpdate_set_commitment_signed(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentUpdate_1new(JNIEnv * _env, jclass _b, jlongArray update_add_htlcs_arg, jlongArray update_fulfill_htlcs_arg, jlongArray update_fail_htlcs_arg, jlongArray update_fail_malformed_htlcs_arg, jlong update_fee_arg, jlong commitment_signed_arg) {
+       LDKCVec_UpdateAddHTLCZ update_add_htlcs_arg_constr;
+       update_add_htlcs_arg_constr.datalen = (*_env)->GetArrayLength (_env, update_add_htlcs_arg);
+       if (update_add_htlcs_arg_constr.datalen > 0)
+               update_add_htlcs_arg_constr.data = MALLOC(update_add_htlcs_arg_constr.datalen * sizeof(LDKUpdateAddHTLC), "LDKCVec_UpdateAddHTLCZ Elements");
+       else
+               update_add_htlcs_arg_constr.data = NULL;
+       long* update_add_htlcs_arg_vals = (*_env)->GetLongArrayElements (_env, update_add_htlcs_arg, NULL);
+       for (size_t p = 0; p < update_add_htlcs_arg_constr.datalen; p++) {
+               long arr_conv_15 = update_add_htlcs_arg_vals[p];
+               LDKUpdateAddHTLC arr_conv_15_conv;
+               arr_conv_15_conv.inner = (void*)(arr_conv_15 & (~1));
+               arr_conv_15_conv.is_owned = (arr_conv_15 & 1) || (arr_conv_15 == 0);
+               if (arr_conv_15_conv.inner != NULL)
+                       arr_conv_15_conv = UpdateAddHTLC_clone(&arr_conv_15_conv);
+               update_add_htlcs_arg_constr.data[p] = arr_conv_15_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, update_add_htlcs_arg, update_add_htlcs_arg_vals, 0);
+       LDKCVec_UpdateFulfillHTLCZ update_fulfill_htlcs_arg_constr;
+       update_fulfill_htlcs_arg_constr.datalen = (*_env)->GetArrayLength (_env, update_fulfill_htlcs_arg);
+       if (update_fulfill_htlcs_arg_constr.datalen > 0)
+               update_fulfill_htlcs_arg_constr.data = MALLOC(update_fulfill_htlcs_arg_constr.datalen * sizeof(LDKUpdateFulfillHTLC), "LDKCVec_UpdateFulfillHTLCZ Elements");
+       else
+               update_fulfill_htlcs_arg_constr.data = NULL;
+       long* update_fulfill_htlcs_arg_vals = (*_env)->GetLongArrayElements (_env, update_fulfill_htlcs_arg, NULL);
+       for (size_t t = 0; t < update_fulfill_htlcs_arg_constr.datalen; t++) {
+               long arr_conv_19 = update_fulfill_htlcs_arg_vals[t];
+               LDKUpdateFulfillHTLC arr_conv_19_conv;
+               arr_conv_19_conv.inner = (void*)(arr_conv_19 & (~1));
+               arr_conv_19_conv.is_owned = (arr_conv_19 & 1) || (arr_conv_19 == 0);
+               if (arr_conv_19_conv.inner != NULL)
+                       arr_conv_19_conv = UpdateFulfillHTLC_clone(&arr_conv_19_conv);
+               update_fulfill_htlcs_arg_constr.data[t] = arr_conv_19_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, update_fulfill_htlcs_arg, update_fulfill_htlcs_arg_vals, 0);
+       LDKCVec_UpdateFailHTLCZ update_fail_htlcs_arg_constr;
+       update_fail_htlcs_arg_constr.datalen = (*_env)->GetArrayLength (_env, update_fail_htlcs_arg);
+       if (update_fail_htlcs_arg_constr.datalen > 0)
+               update_fail_htlcs_arg_constr.data = MALLOC(update_fail_htlcs_arg_constr.datalen * sizeof(LDKUpdateFailHTLC), "LDKCVec_UpdateFailHTLCZ Elements");
+       else
+               update_fail_htlcs_arg_constr.data = NULL;
+       long* update_fail_htlcs_arg_vals = (*_env)->GetLongArrayElements (_env, update_fail_htlcs_arg, NULL);
+       for (size_t q = 0; q < update_fail_htlcs_arg_constr.datalen; q++) {
+               long arr_conv_16 = update_fail_htlcs_arg_vals[q];
+               LDKUpdateFailHTLC arr_conv_16_conv;
+               arr_conv_16_conv.inner = (void*)(arr_conv_16 & (~1));
+               arr_conv_16_conv.is_owned = (arr_conv_16 & 1) || (arr_conv_16 == 0);
+               if (arr_conv_16_conv.inner != NULL)
+                       arr_conv_16_conv = UpdateFailHTLC_clone(&arr_conv_16_conv);
+               update_fail_htlcs_arg_constr.data[q] = arr_conv_16_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, update_fail_htlcs_arg, update_fail_htlcs_arg_vals, 0);
+       LDKCVec_UpdateFailMalformedHTLCZ update_fail_malformed_htlcs_arg_constr;
+       update_fail_malformed_htlcs_arg_constr.datalen = (*_env)->GetArrayLength (_env, update_fail_malformed_htlcs_arg);
+       if (update_fail_malformed_htlcs_arg_constr.datalen > 0)
+               update_fail_malformed_htlcs_arg_constr.data = MALLOC(update_fail_malformed_htlcs_arg_constr.datalen * sizeof(LDKUpdateFailMalformedHTLC), "LDKCVec_UpdateFailMalformedHTLCZ Elements");
+       else
+               update_fail_malformed_htlcs_arg_constr.data = NULL;
+       long* update_fail_malformed_htlcs_arg_vals = (*_env)->GetLongArrayElements (_env, update_fail_malformed_htlcs_arg, NULL);
+       for (size_t z = 0; z < update_fail_malformed_htlcs_arg_constr.datalen; z++) {
+               long arr_conv_25 = update_fail_malformed_htlcs_arg_vals[z];
+               LDKUpdateFailMalformedHTLC arr_conv_25_conv;
+               arr_conv_25_conv.inner = (void*)(arr_conv_25 & (~1));
+               arr_conv_25_conv.is_owned = (arr_conv_25 & 1) || (arr_conv_25 == 0);
+               if (arr_conv_25_conv.inner != NULL)
+                       arr_conv_25_conv = UpdateFailMalformedHTLC_clone(&arr_conv_25_conv);
+               update_fail_malformed_htlcs_arg_constr.data[z] = arr_conv_25_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, update_fail_malformed_htlcs_arg, update_fail_malformed_htlcs_arg_vals, 0);
+       LDKUpdateFee update_fee_arg_conv;
+       update_fee_arg_conv.inner = (void*)(update_fee_arg & (~1));
+       update_fee_arg_conv.is_owned = (update_fee_arg & 1) || (update_fee_arg == 0);
+       if (update_fee_arg_conv.inner != NULL)
+               update_fee_arg_conv = UpdateFee_clone(&update_fee_arg_conv);
+       LDKCommitmentSigned commitment_signed_arg_conv;
+       commitment_signed_arg_conv.inner = (void*)(commitment_signed_arg & (~1));
+       commitment_signed_arg_conv.is_owned = (commitment_signed_arg & 1) || (commitment_signed_arg == 0);
+       if (commitment_signed_arg_conv.inner != NULL)
+               commitment_signed_arg_conv = CommitmentSigned_clone(&commitment_signed_arg_conv);
+       LDKCommitmentUpdate ret_var = CommitmentUpdate_new(update_add_htlcs_arg_constr, update_fulfill_htlcs_arg_constr, update_fail_htlcs_arg_constr, update_fail_malformed_htlcs_arg_constr, update_fee_arg_conv, commitment_signed_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCFailChannelUpdate_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKHTLCFailChannelUpdate this_ptr_conv = *(LDKHTLCFailChannelUpdate*)this_ptr;
        FREE((void*)this_ptr);
-       return HTLCFailChannelUpdate_free(this_ptr_conv);
+       HTLCFailChannelUpdate_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCFailChannelUpdate_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKHTLCFailChannelUpdate* orig_conv = (LDKHTLCFailChannelUpdate*)orig;
+       LDKHTLCFailChannelUpdate *ret_copy = MALLOC(sizeof(LDKHTLCFailChannelUpdate), "LDKHTLCFailChannelUpdate");
+       *ret_copy = HTLCFailChannelUpdate_clone(orig_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelMessageHandler_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKChannelMessageHandler this_ptr_conv = *(LDKChannelMessageHandler*)this_ptr;
        FREE((void*)this_ptr);
-       return ChannelMessageHandler_free(this_ptr_conv);
+       ChannelMessageHandler_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RoutingMessageHandler_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKRoutingMessageHandler this_ptr_conv = *(LDKRoutingMessageHandler*)this_ptr;
        FREE((void*)this_ptr);
-       return RoutingMessageHandler_free(this_ptr_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKAcceptChannel* obj_conv = (LDKAcceptChannel*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = AcceptChannel_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKAcceptChannel* ret = MALLOC(sizeof(LDKAcceptChannel), "LDKAcceptChannel");
-       *ret = AcceptChannel_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKAnnouncementSignatures* obj_conv = (LDKAnnouncementSignatures*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = AnnouncementSignatures_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKAnnouncementSignatures* ret = MALLOC(sizeof(LDKAnnouncementSignatures), "LDKAnnouncementSignatures");
-       *ret = AnnouncementSignatures_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKChannelReestablish* obj_conv = (LDKChannelReestablish*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ChannelReestablish_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKChannelReestablish* ret = MALLOC(sizeof(LDKChannelReestablish), "LDKChannelReestablish");
-       *ret = ChannelReestablish_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKClosingSigned* obj_conv = (LDKClosingSigned*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ClosingSigned_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKClosingSigned* ret = MALLOC(sizeof(LDKClosingSigned), "LDKClosingSigned");
-       *ret = ClosingSigned_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKCommitmentSigned* obj_conv = (LDKCommitmentSigned*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = CommitmentSigned_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKCommitmentSigned* ret = MALLOC(sizeof(LDKCommitmentSigned), "LDKCommitmentSigned");
-       *ret = CommitmentSigned_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingCreated_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKFundingCreated* obj_conv = (LDKFundingCreated*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = FundingCreated_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingCreated_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKFundingCreated* ret = MALLOC(sizeof(LDKFundingCreated), "LDKFundingCreated");
-       *ret = FundingCreated_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingSigned_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKFundingSigned* obj_conv = (LDKFundingSigned*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = FundingSigned_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingSigned_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKFundingSigned* ret = MALLOC(sizeof(LDKFundingSigned), "LDKFundingSigned");
-       *ret = FundingSigned_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingLocked_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKFundingLocked* obj_conv = (LDKFundingLocked*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = FundingLocked_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingLocked_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKFundingLocked* ret = MALLOC(sizeof(LDKFundingLocked), "LDKFundingLocked");
-       *ret = FundingLocked_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Init_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKInit* obj_conv = (LDKInit*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = Init_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Init_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKInit* ret = MALLOC(sizeof(LDKInit), "LDKInit");
-       *ret = Init_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKOpenChannel* obj_conv = (LDKOpenChannel*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = OpenChannel_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKOpenChannel* ret = MALLOC(sizeof(LDKOpenChannel), "LDKOpenChannel");
-       *ret = OpenChannel_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKRevokeAndACK* obj_conv = (LDKRevokeAndACK*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = RevokeAndACK_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKRevokeAndACK* ret = MALLOC(sizeof(LDKRevokeAndACK), "LDKRevokeAndACK");
-       *ret = RevokeAndACK_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Shutdown_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKShutdown* obj_conv = (LDKShutdown*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = Shutdown_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Shutdown_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKShutdown* ret = MALLOC(sizeof(LDKShutdown), "LDKShutdown");
-       *ret = Shutdown_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUpdateFailHTLC* obj_conv = (LDKUpdateFailHTLC*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UpdateFailHTLC_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUpdateFailHTLC* ret = MALLOC(sizeof(LDKUpdateFailHTLC), "LDKUpdateFailHTLC");
-       *ret = UpdateFailHTLC_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUpdateFailMalformedHTLC* obj_conv = (LDKUpdateFailMalformedHTLC*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UpdateFailMalformedHTLC_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUpdateFailMalformedHTLC* ret = MALLOC(sizeof(LDKUpdateFailMalformedHTLC), "LDKUpdateFailMalformedHTLC");
-       *ret = UpdateFailMalformedHTLC_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFee_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUpdateFee* obj_conv = (LDKUpdateFee*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UpdateFee_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFee_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUpdateFee* ret = MALLOC(sizeof(LDKUpdateFee), "LDKUpdateFee");
-       *ret = UpdateFee_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUpdateFulfillHTLC* obj_conv = (LDKUpdateFulfillHTLC*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UpdateFulfillHTLC_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUpdateFulfillHTLC* ret = MALLOC(sizeof(LDKUpdateFulfillHTLC), "LDKUpdateFulfillHTLC");
-       *ret = UpdateFulfillHTLC_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUpdateAddHTLC* obj_conv = (LDKUpdateAddHTLC*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UpdateAddHTLC_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUpdateAddHTLC* ret = MALLOC(sizeof(LDKUpdateAddHTLC), "LDKUpdateAddHTLC");
-       *ret = UpdateAddHTLC_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Ping_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKPing* obj_conv = (LDKPing*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = Ping_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Ping_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKPing* ret = MALLOC(sizeof(LDKPing), "LDKPing");
-       *ret = Ping_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Pong_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKPong* obj_conv = (LDKPong*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = Pong_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Pong_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKPong* ret = MALLOC(sizeof(LDKPong), "LDKPong");
-       *ret = Pong_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUnsignedChannelAnnouncement* obj_conv = (LDKUnsignedChannelAnnouncement*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UnsignedChannelAnnouncement_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUnsignedChannelAnnouncement* ret = MALLOC(sizeof(LDKUnsignedChannelAnnouncement), "LDKUnsignedChannelAnnouncement");
-       *ret = UnsignedChannelAnnouncement_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKChannelAnnouncement* obj_conv = (LDKChannelAnnouncement*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ChannelAnnouncement_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKChannelAnnouncement* ret = MALLOC(sizeof(LDKChannelAnnouncement), "LDKChannelAnnouncement");
-       *ret = ChannelAnnouncement_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUnsignedChannelUpdate* obj_conv = (LDKUnsignedChannelUpdate*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UnsignedChannelUpdate_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUnsignedChannelUpdate* ret = MALLOC(sizeof(LDKUnsignedChannelUpdate), "LDKUnsignedChannelUpdate");
-       *ret = UnsignedChannelUpdate_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKChannelUpdate* obj_conv = (LDKChannelUpdate*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ChannelUpdate_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKChannelUpdate* ret = MALLOC(sizeof(LDKChannelUpdate), "LDKChannelUpdate");
-       *ret = ChannelUpdate_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKErrorMessage* obj_conv = (LDKErrorMessage*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ErrorMessage_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKErrorMessage* ret = MALLOC(sizeof(LDKErrorMessage), "LDKErrorMessage");
-       *ret = ErrorMessage_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKUnsignedNodeAnnouncement* obj_conv = (LDKUnsignedNodeAnnouncement*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = UnsignedNodeAnnouncement_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKUnsignedNodeAnnouncement* ret = MALLOC(sizeof(LDKUnsignedNodeAnnouncement), "LDKUnsignedNodeAnnouncement");
-       *ret = UnsignedNodeAnnouncement_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKNodeAnnouncement* obj_conv = (LDKNodeAnnouncement*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = NodeAnnouncement_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKNodeAnnouncement* ret = MALLOC(sizeof(LDKNodeAnnouncement), "LDKNodeAnnouncement");
-       *ret = NodeAnnouncement_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKQueryShortChannelIds* ret = MALLOC(sizeof(LDKQueryShortChannelIds), "LDKQueryShortChannelIds");
-       *ret = QueryShortChannelIds_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKQueryShortChannelIds* obj_conv = (LDKQueryShortChannelIds*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = QueryShortChannelIds_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKReplyShortChannelIdsEnd* ret = MALLOC(sizeof(LDKReplyShortChannelIdsEnd), "LDKReplyShortChannelIdsEnd");
-       *ret = ReplyShortChannelIdsEnd_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKReplyShortChannelIdsEnd* obj_conv = (LDKReplyShortChannelIdsEnd*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ReplyShortChannelIdsEnd_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKQueryChannelRange* ret = MALLOC(sizeof(LDKQueryChannelRange), "LDKQueryChannelRange");
-       *ret = QueryChannelRange_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKQueryChannelRange* obj_conv = (LDKQueryChannelRange*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = QueryChannelRange_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKReplyChannelRange* ret = MALLOC(sizeof(LDKReplyChannelRange), "LDKReplyChannelRange");
-       *ret = ReplyChannelRange_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKReplyChannelRange* obj_conv = (LDKReplyChannelRange*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ReplyChannelRange_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKGossipTimestampFilter* ret = MALLOC(sizeof(LDKGossipTimestampFilter), "LDKGossipTimestampFilter");
-       *ret = GossipTimestampFilter_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       RoutingMessageHandler_free(this_ptr_conv);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKAcceptChannel obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = AcceptChannel_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AcceptChannel_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKAcceptChannel ret_var = AcceptChannel_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKAnnouncementSignatures obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = AnnouncementSignatures_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_AnnouncementSignatures_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKAnnouncementSignatures ret_var = AnnouncementSignatures_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKChannelReestablish obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ChannelReestablish_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelReestablish_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKChannelReestablish ret_var = ChannelReestablish_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKClosingSigned obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ClosingSigned_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ClosingSigned_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKClosingSigned ret_var = ClosingSigned_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKCommitmentSigned obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = CommitmentSigned_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_CommitmentSigned_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKCommitmentSigned ret_var = CommitmentSigned_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingCreated_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKFundingCreated obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = FundingCreated_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingCreated_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKFundingCreated ret_var = FundingCreated_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingSigned_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKFundingSigned obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = FundingSigned_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingSigned_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKFundingSigned ret_var = FundingSigned_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_FundingLocked_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKFundingLocked obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = FundingLocked_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_FundingLocked_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKFundingLocked ret_var = FundingLocked_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_Init_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKInit obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = Init_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Init_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKInit ret_var = Init_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_OpenChannel_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKOpenChannel obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = OpenChannel_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_OpenChannel_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKOpenChannel ret_var = OpenChannel_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKRevokeAndACK obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = RevokeAndACK_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RevokeAndACK_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKRevokeAndACK ret_var = RevokeAndACK_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_Shutdown_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKShutdown obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = Shutdown_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Shutdown_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKShutdown ret_var = Shutdown_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUpdateFailHTLC obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UpdateFailHTLC_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailHTLC_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUpdateFailHTLC ret_var = UpdateFailHTLC_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUpdateFailMalformedHTLC obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UpdateFailMalformedHTLC_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFailMalformedHTLC_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUpdateFailMalformedHTLC ret_var = UpdateFailMalformedHTLC_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFee_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUpdateFee obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UpdateFee_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFee_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUpdateFee ret_var = UpdateFee_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUpdateFulfillHTLC obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UpdateFulfillHTLC_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateFulfillHTLC_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUpdateFulfillHTLC ret_var = UpdateFulfillHTLC_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUpdateAddHTLC obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UpdateAddHTLC_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UpdateAddHTLC_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUpdateAddHTLC ret_var = UpdateAddHTLC_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_Ping_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKPing obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = Ping_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Ping_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKPing ret_var = Ping_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_Pong_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKPong obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = Pong_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Pong_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKPong ret_var = Pong_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUnsignedChannelAnnouncement obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UnsignedChannelAnnouncement_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelAnnouncement_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUnsignedChannelAnnouncement ret_var = UnsignedChannelAnnouncement_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKChannelAnnouncement obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ChannelAnnouncement_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelAnnouncement_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKChannelAnnouncement ret_var = ChannelAnnouncement_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUnsignedChannelUpdate obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UnsignedChannelUpdate_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedChannelUpdate_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUnsignedChannelUpdate ret_var = UnsignedChannelUpdate_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKChannelUpdate obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ChannelUpdate_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelUpdate_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKChannelUpdate ret_var = ChannelUpdate_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKErrorMessage obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ErrorMessage_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ErrorMessage_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKErrorMessage ret_var = ErrorMessage_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKUnsignedNodeAnnouncement obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = UnsignedNodeAnnouncement_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_UnsignedNodeAnnouncement_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKUnsignedNodeAnnouncement ret_var = UnsignedNodeAnnouncement_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKNodeAnnouncement obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = NodeAnnouncement_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncement_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKNodeAnnouncement ret_var = NodeAnnouncement_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKQueryShortChannelIds ret_var = QueryShortChannelIds_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_QueryShortChannelIds_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKQueryShortChannelIds obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = QueryShortChannelIds_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKReplyShortChannelIdsEnd ret_var = ReplyShortChannelIdsEnd_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ReplyShortChannelIdsEnd_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKReplyShortChannelIdsEnd obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ReplyShortChannelIdsEnd_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKQueryChannelRange ret_var = QueryChannelRange_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_QueryChannelRange_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKQueryChannelRange obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = QueryChannelRange_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKReplyChannelRange ret_var = ReplyChannelRange_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ReplyChannelRange_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKReplyChannelRange obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ReplyChannelRange_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKGossipTimestampFilter ret_var = GossipTimestampFilter_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKGossipTimestampFilter* obj_conv = (LDKGossipTimestampFilter*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = GossipTimestampFilter_write(obj_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_GossipTimestampFilter_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKGossipTimestampFilter obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = GossipTimestampFilter_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MessageHandler_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKMessageHandler this_ptr_conv = *(LDKMessageHandler*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return MessageHandler_free(this_ptr_conv);
+       LDKMessageHandler this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       MessageHandler_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_MessageHandler_1get_1chan_1handler(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKMessageHandler* this_ptr_conv = (LDKMessageHandler*)this_ptr;
-       long ret = (long)MessageHandler_get_chan_handler(this_ptr_conv);
-       return ret;
+       LDKMessageHandler this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       long ret_ret = (long)MessageHandler_get_chan_handler(&this_ptr_conv);
+       return ret_ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MessageHandler_1set_1chan_1handler(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKMessageHandler* this_ptr_conv = (LDKMessageHandler*)this_ptr;
+       LDKMessageHandler this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKChannelMessageHandler val_conv = *(LDKChannelMessageHandler*)val;
        if (val_conv.free == LDKChannelMessageHandler_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKChannelMessageHandler_JCalls_clone(val_conv.this_arg);
        }
-       return MessageHandler_set_chan_handler(this_ptr_conv, val_conv);
+       MessageHandler_set_chan_handler(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_MessageHandler_1get_1route_1handler(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKMessageHandler* this_ptr_conv = (LDKMessageHandler*)this_ptr;
-       long ret = (long)MessageHandler_get_route_handler(this_ptr_conv);
-       return ret;
+       LDKMessageHandler this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       long ret_ret = (long)MessageHandler_get_route_handler(&this_ptr_conv);
+       return ret_ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_MessageHandler_1set_1route_1handler(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKMessageHandler* this_ptr_conv = (LDKMessageHandler*)this_ptr;
+       LDKMessageHandler this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKRoutingMessageHandler val_conv = *(LDKRoutingMessageHandler*)val;
        if (val_conv.free == LDKRoutingMessageHandler_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKRoutingMessageHandler_JCalls_clone(val_conv.this_arg);
        }
-       return MessageHandler_set_route_handler(this_ptr_conv, val_conv);
+       MessageHandler_set_route_handler(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_MessageHandler_1new(JNIEnv * _env, jclass _b, jlong chan_handler_arg, jlong route_handler_arg) {
@@ -6030,58 +12208,72 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_MessageHandler_1new(JNIEnv *
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKRoutingMessageHandler_JCalls_clone(route_handler_arg_conv.this_arg);
        }
-       LDKMessageHandler* ret = MALLOC(sizeof(LDKMessageHandler), "LDKMessageHandler");
-       *ret = MessageHandler_new(chan_handler_arg_conv, route_handler_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKMessageHandler ret_var = MessageHandler_new(chan_handler_arg_conv, route_handler_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_SocketDescriptor_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
        LDKSocketDescriptor this_ptr_conv = *(LDKSocketDescriptor*)this_ptr;
        FREE((void*)this_ptr);
-       return SocketDescriptor_free(this_ptr_conv);
+       SocketDescriptor_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerHandleError_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPeerHandleError this_ptr_conv = *(LDKPeerHandleError*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return PeerHandleError_free(this_ptr_conv);
+       LDKPeerHandleError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       PeerHandleError_free(this_ptr_conv);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_PeerHandleError_1get_1no_1connection_1possible(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPeerHandleError* this_ptr_conv = (LDKPeerHandleError*)this_ptr;
-       return PeerHandleError_get_no_connection_possible(this_ptr_conv);
+       LDKPeerHandleError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = PeerHandleError_get_no_connection_possible(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerHandleError_1set_1no_1connection_1possible(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKPeerHandleError* this_ptr_conv = (LDKPeerHandleError*)this_ptr;
-       return PeerHandleError_set_no_connection_possible(this_ptr_conv, val);
+       LDKPeerHandleError this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       PeerHandleError_set_no_connection_possible(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerHandleError_1new(JNIEnv * _env, jclass _b, jboolean no_connection_possible_arg) {
-       LDKPeerHandleError* ret = MALLOC(sizeof(LDKPeerHandleError), "LDKPeerHandleError");
-       *ret = PeerHandleError_new(no_connection_possible_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKPeerHandleError ret_var = PeerHandleError_new(no_connection_possible_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerManager_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPeerManager this_ptr_conv = *(LDKPeerManager*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return PeerManager_free(this_ptr_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1new(JNIEnv * _env, jclass _b, jlong message_handler, jlong our_node_secret, jbyteArray ephemeral_random_data, jlong logger) {
-       LDKMessageHandler message_handler_conv = *(LDKMessageHandler*)message_handler;
-       FREE((void*)message_handler);
-       message_handler_conv.is_owned = true;
-       LDKSecretKey our_node_secret_conv = *(LDKSecretKey*)our_node_secret;
-       FREE((void*)our_node_secret);
+       LDKPeerManager this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       PeerManager_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1new(JNIEnv * _env, jclass _b, jlong message_handler, jbyteArray our_node_secret, jbyteArray ephemeral_random_data, jlong logger) {
+       LDKMessageHandler message_handler_conv;
+       message_handler_conv.inner = (void*)(message_handler & (~1));
+       message_handler_conv.is_owned = (message_handler & 1) || (message_handler == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKSecretKey our_node_secret_ref;
+       CHECK((*_env)->GetArrayLength (_env, our_node_secret) == 32);
+       (*_env)->GetByteArrayRegion (_env, our_node_secret, 0, 32, our_node_secret_ref.bytes);
        unsigned char ephemeral_random_data_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, ephemeral_random_data) == 32);
        (*_env)->GetByteArrayRegion (_env, ephemeral_random_data, 0, 32, ephemeral_random_data_arr);
        unsigned char (*ephemeral_random_data_ref)[32] = &ephemeral_random_data_arr;
        LDKLogger logger_conv = *(LDKLogger*)logger;
@@ -6089,926 +12281,1471 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1new(JNIEnv * _en
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(logger_conv.this_arg);
        }
-       LDKPeerManager* ret = MALLOC(sizeof(LDKPeerManager), "LDKPeerManager");
-       *ret = PeerManager_new(message_handler_conv, our_node_secret_conv, ephemeral_random_data_ref, logger_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1get_1peer_1node_1ids(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
-       LDKCVec_PublicKeyZ* ret = MALLOC(sizeof(LDKCVec_PublicKeyZ), "LDKCVec_PublicKeyZ");
-       *ret = PeerManager_get_peer_node_ids(this_arg_conv);
-       return (long)ret;
+       LDKPeerManager ret_var = PeerManager_new(message_handler_conv, our_node_secret_ref, ephemeral_random_data_ref, logger_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jobjectArray JNICALL Java_org_ldk_impl_bindings_PeerManager_1get_1peer_1node_1ids(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKCVec_PublicKeyZ ret_var = PeerManager_get_peer_node_ids(&this_arg_conv);
+       jobjectArray ret_arr = (*_env)->NewObjectArray(_env, ret_var.datalen, arr_of_B_clz, NULL);
+       for (size_t i = 0; i < ret_var.datalen; i++) {
+               jbyteArray arr_conv_8_arr = (*_env)->NewByteArray(_env, 33);
+               (*_env)->SetByteArrayRegion(_env, arr_conv_8_arr, 0, 33, ret_var.data[i].compressed_form);
+               (*_env)->SetObjectArrayElement(_env, ret_arr, i, arr_conv_8_arr);
+       }
+       CVec_PublicKeyZ_free(ret_var);
+       return ret_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1new_1outbound_1connection(JNIEnv * _env, jclass _b, jlong this_arg, jlong their_node_id, jlong descriptor) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
-       LDKPublicKey their_node_id_conv = *(LDKPublicKey*)their_node_id;
-       FREE((void*)their_node_id);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1new_1outbound_1connection(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray their_node_id, jlong descriptor) {
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKPublicKey their_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, their_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, their_node_id, 0, 33, their_node_id_ref.compressed_form);
        LDKSocketDescriptor descriptor_conv = *(LDKSocketDescriptor*)descriptor;
        if (descriptor_conv.free == LDKSocketDescriptor_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKSocketDescriptor_JCalls_clone(descriptor_conv.this_arg);
        }
-       LDKCResult_CVec_u8ZPeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_CVec_u8ZPeerHandleErrorZ), "LDKCResult_CVec_u8ZPeerHandleErrorZ");
-       *ret = PeerManager_new_outbound_connection(this_arg_conv, their_node_id_conv, descriptor_conv);
-       return (long)ret;
+       LDKCResult_CVec_u8ZPeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_CVec_u8ZPeerHandleErrorZ), "LDKCResult_CVec_u8ZPeerHandleErrorZ");
+       *ret_conv = PeerManager_new_outbound_connection(&this_arg_conv, their_node_id_ref, descriptor_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1new_1inbound_1connection(JNIEnv * _env, jclass _b, jlong this_arg, jlong descriptor) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKSocketDescriptor descriptor_conv = *(LDKSocketDescriptor*)descriptor;
        if (descriptor_conv.free == LDKSocketDescriptor_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKSocketDescriptor_JCalls_clone(descriptor_conv.this_arg);
        }
-       LDKCResult_NonePeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
-       *ret = PeerManager_new_inbound_connection(this_arg_conv, descriptor_conv);
-       return (long)ret;
+       LDKCResult_NonePeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
+       *ret_conv = PeerManager_new_inbound_connection(&this_arg_conv, descriptor_conv);
+       return (long)ret_conv;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1write_1buffer_1space_1avail(JNIEnv * _env, jclass _b, jlong this_arg, jlong descriptor) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKSocketDescriptor* descriptor_conv = (LDKSocketDescriptor*)descriptor;
-       LDKCResult_NonePeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
-       *ret = PeerManager_write_buffer_space_avail(this_arg_conv, descriptor_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1read_1event(JNIEnv * _env, jclass _b, jlong this_arg, jlong peer_descriptor, jlong data) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
-       LDKSocketDescriptor* peer_descriptor_conv = (LDKSocketDescriptor*)peer_descriptor;
-       LDKu8slice data_conv = *(LDKu8slice*)data;
-       FREE((void*)data);
-       LDKCResult_boolPeerHandleErrorZ* ret = MALLOC(sizeof(LDKCResult_boolPeerHandleErrorZ), "LDKCResult_boolPeerHandleErrorZ");
-       *ret = PeerManager_read_event(this_arg_conv, peer_descriptor_conv, data_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerManager_1process_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
-       return PeerManager_process_events(this_arg_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerManager_1socket_1disconnected(JNIEnv * _env, jclass _b, jlong this_arg, jlong descriptor) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
-       LDKSocketDescriptor* descriptor_conv = (LDKSocketDescriptor*)descriptor;
-       return PeerManager_socket_disconnected(this_arg_conv, descriptor_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerManager_1timer_1tick_1occured(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKPeerManager* this_arg_conv = (LDKPeerManager*)this_arg;
-       return PeerManager_timer_tick_occured(this_arg_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_build_1commitment_1secret(JNIEnv * _env, jclass _b, jbyteArray commitment_seed, jlong idx) {
-       unsigned char commitment_seed_arr[32];
-       (*_env)->GetByteArrayRegion (_env, commitment_seed, 0, 32, commitment_seed_arr);
-       unsigned char (*commitment_seed_ref)[32] = &commitment_seed_arr;
-       LDKThirtyTwoBytes* ret = MALLOC(sizeof(LDKThirtyTwoBytes), "LDKThirtyTwoBytes");
-       *ret = build_commitment_secret(commitment_seed_ref, idx);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1private_1key(JNIEnv * _env, jclass _b, jlong per_commitment_point, jbyteArray base_secret) {
-       LDKPublicKey per_commitment_point_conv = *(LDKPublicKey*)per_commitment_point;
-       FREE((void*)per_commitment_point);
-       unsigned char base_secret_arr[32];
-       (*_env)->GetByteArrayRegion (_env, base_secret, 0, 32, base_secret_arr);
-       unsigned char (*base_secret_ref)[32] = &base_secret_arr;
-       LDKCResult_SecretKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
-       *ret = derive_private_key(per_commitment_point_conv, base_secret_ref);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1public_1key(JNIEnv * _env, jclass _b, jlong per_commitment_point, jlong base_point) {
-       LDKPublicKey per_commitment_point_conv = *(LDKPublicKey*)per_commitment_point;
-       FREE((void*)per_commitment_point);
-       LDKPublicKey base_point_conv = *(LDKPublicKey*)base_point;
-       FREE((void*)base_point);
-       LDKCResult_PublicKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
-       *ret = derive_public_key(per_commitment_point_conv, base_point_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1private_1revocation_1key(JNIEnv * _env, jclass _b, jbyteArray per_commitment_secret, jbyteArray countersignatory_revocation_base_secret) {
-       unsigned char per_commitment_secret_arr[32];
-       (*_env)->GetByteArrayRegion (_env, per_commitment_secret, 0, 32, per_commitment_secret_arr);
-       unsigned char (*per_commitment_secret_ref)[32] = &per_commitment_secret_arr;
-       unsigned char countersignatory_revocation_base_secret_arr[32];
-       (*_env)->GetByteArrayRegion (_env, countersignatory_revocation_base_secret, 0, 32, countersignatory_revocation_base_secret_arr);
-       unsigned char (*countersignatory_revocation_base_secret_ref)[32] = &countersignatory_revocation_base_secret_arr;
-       LDKCResult_SecretKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
-       *ret = derive_private_revocation_key(per_commitment_secret_ref, countersignatory_revocation_base_secret_ref);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1public_1revocation_1key(JNIEnv * _env, jclass _b, jlong per_commitment_point, jlong countersignatory_revocation_base_point) {
-       LDKPublicKey per_commitment_point_conv = *(LDKPublicKey*)per_commitment_point;
-       FREE((void*)per_commitment_point);
-       LDKPublicKey countersignatory_revocation_base_point_conv = *(LDKPublicKey*)countersignatory_revocation_base_point;
-       FREE((void*)countersignatory_revocation_base_point);
-       LDKCResult_PublicKeySecpErrorZ* ret = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
-       *ret = derive_public_revocation_key(per_commitment_point_conv, countersignatory_revocation_base_point_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKTxCreationKeys this_ptr_conv = *(LDKTxCreationKeys*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return TxCreationKeys_free(this_ptr_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = TxCreationKeys_get_per_commitment_point(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return TxCreationKeys_set_per_commitment_point(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1revocation_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = TxCreationKeys_get_revocation_key(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1revocation_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return TxCreationKeys_set_revocation_key(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1broadcaster_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = TxCreationKeys_get_broadcaster_htlc_key(this_ptr_conv);
-       return (long)ret;
+       LDKCResult_NonePeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_NonePeerHandleErrorZ), "LDKCResult_NonePeerHandleErrorZ");
+       *ret_conv = PeerManager_write_buffer_space_avail(&this_arg_conv, descriptor_conv);
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1broadcaster_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return TxCreationKeys_set_broadcaster_htlc_key(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1countersignatory_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = TxCreationKeys_get_countersignatory_htlc_key(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1countersignatory_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return TxCreationKeys_set_countersignatory_htlc_key(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1broadcaster_1delayed_1payment_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = TxCreationKeys_get_broadcaster_delayed_payment_key(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1broadcaster_1delayed_1payment_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKTxCreationKeys* this_ptr_conv = (LDKTxCreationKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return TxCreationKeys_set_broadcaster_delayed_payment_key(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1new(JNIEnv * _env, jclass _b, jlong per_commitment_point_arg, jlong revocation_key_arg, jlong broadcaster_htlc_key_arg, jlong countersignatory_htlc_key_arg, jlong broadcaster_delayed_payment_key_arg) {
-       LDKPublicKey per_commitment_point_arg_conv = *(LDKPublicKey*)per_commitment_point_arg;
-       FREE((void*)per_commitment_point_arg);
-       LDKPublicKey revocation_key_arg_conv = *(LDKPublicKey*)revocation_key_arg;
-       FREE((void*)revocation_key_arg);
-       LDKPublicKey broadcaster_htlc_key_arg_conv = *(LDKPublicKey*)broadcaster_htlc_key_arg;
-       FREE((void*)broadcaster_htlc_key_arg);
-       LDKPublicKey countersignatory_htlc_key_arg_conv = *(LDKPublicKey*)countersignatory_htlc_key_arg;
-       FREE((void*)countersignatory_htlc_key_arg);
-       LDKPublicKey broadcaster_delayed_payment_key_arg_conv = *(LDKPublicKey*)broadcaster_delayed_payment_key_arg;
-       FREE((void*)broadcaster_delayed_payment_key_arg);
-       LDKTxCreationKeys* ret = MALLOC(sizeof(LDKTxCreationKeys), "LDKTxCreationKeys");
-       *ret = TxCreationKeys_new(per_commitment_point_arg_conv, revocation_key_arg_conv, broadcaster_htlc_key_arg_conv, countersignatory_htlc_key_arg_conv, broadcaster_delayed_payment_key_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKTxCreationKeys* obj_conv = (LDKTxCreationKeys*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = TxCreationKeys_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKTxCreationKeys* ret = MALLOC(sizeof(LDKTxCreationKeys), "LDKTxCreationKeys");
-       *ret = TxCreationKeys_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKPreCalculatedTxCreationKeys this_ptr_conv = *(LDKPreCalculatedTxCreationKeys*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return PreCalculatedTxCreationKeys_free(this_ptr_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1new(JNIEnv * _env, jclass _b, jlong keys) {
-       LDKTxCreationKeys keys_conv = *(LDKTxCreationKeys*)keys;
-       FREE((void*)keys);
-       keys_conv.is_owned = true;
-       LDKPreCalculatedTxCreationKeys* ret = MALLOC(sizeof(LDKPreCalculatedTxCreationKeys), "LDKPreCalculatedTxCreationKeys");
-       *ret = PreCalculatedTxCreationKeys_new(keys_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1trust_1key_1derivation(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKPreCalculatedTxCreationKeys* this_arg_conv = (LDKPreCalculatedTxCreationKeys*)this_arg;
-       LDKTxCreationKeys* ret = MALLOC(sizeof(LDKTxCreationKeys), "LDKTxCreationKeys");
-       *ret = PreCalculatedTxCreationKeys_trust_key_derivation(this_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKPreCalculatedTxCreationKeys* this_arg_conv = (LDKPreCalculatedTxCreationKeys*)this_arg;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = PreCalculatedTxCreationKeys_per_commitment_point(this_arg_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelPublicKeys this_ptr_conv = *(LDKChannelPublicKeys*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelPublicKeys_free(this_ptr_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PeerManager_1read_1event(JNIEnv * _env, jclass _b, jlong this_arg, jlong peer_descriptor, jbyteArray data) {
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKSocketDescriptor* peer_descriptor_conv = (LDKSocketDescriptor*)peer_descriptor;
+       LDKu8slice data_ref;
+       data_ref.data = (*_env)->GetByteArrayElements (_env, data, NULL);
+       data_ref.datalen = (*_env)->GetArrayLength (_env, data);
+       LDKCResult_boolPeerHandleErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_boolPeerHandleErrorZ), "LDKCResult_boolPeerHandleErrorZ");
+       *ret_conv = PeerManager_read_event(&this_arg_conv, peer_descriptor_conv, data_ref);
+       (*_env)->ReleaseByteArrayElements(_env, data, (int8_t*)data_ref.data, 0);
+       return (long)ret_conv;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelPublicKeys_get_funding_pubkey(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerManager_1process_1events(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       PeerManager_process_events(&this_arg_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelPublicKeys_set_funding_pubkey(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerManager_1socket_1disconnected(JNIEnv * _env, jclass _b, jlong this_arg, jlong descriptor) {
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKSocketDescriptor* descriptor_conv = (LDKSocketDescriptor*)descriptor;
+       PeerManager_socket_disconnected(&this_arg_conv, descriptor_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelPublicKeys_get_revocation_basepoint(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PeerManager_1timer_1tick_1occured(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKPeerManager this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       PeerManager_timer_tick_occured(&this_arg_conv);
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelPublicKeys_set_revocation_basepoint(this_ptr_conv, val_conv);
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_build_1commitment_1secret(JNIEnv * _env, jclass _b, jbyteArray commitment_seed, jlong idx) {
+       unsigned char commitment_seed_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, commitment_seed) == 32);
+       (*_env)->GetByteArrayRegion (_env, commitment_seed, 0, 32, commitment_seed_arr);
+       unsigned char (*commitment_seed_ref)[32] = &commitment_seed_arr;
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 32, build_commitment_secret(commitment_seed_ref, idx).data);
+       return arg_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelPublicKeys_get_payment_point(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1private_1key(JNIEnv * _env, jclass _b, jbyteArray per_commitment_point, jbyteArray base_secret) {
+       LDKPublicKey per_commitment_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_point, 0, 33, per_commitment_point_ref.compressed_form);
+       unsigned char base_secret_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, base_secret) == 32);
+       (*_env)->GetByteArrayRegion (_env, base_secret, 0, 32, base_secret_arr);
+       unsigned char (*base_secret_ref)[32] = &base_secret_arr;
+       LDKCResult_SecretKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
+       *ret_conv = derive_private_key(per_commitment_point_ref, base_secret_ref);
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelPublicKeys_set_payment_point(this_ptr_conv, val_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1public_1key(JNIEnv * _env, jclass _b, jbyteArray per_commitment_point, jbyteArray base_point) {
+       LDKPublicKey per_commitment_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_point, 0, 33, per_commitment_point_ref.compressed_form);
+       LDKPublicKey base_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, base_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, base_point, 0, 33, base_point_ref.compressed_form);
+       LDKCResult_PublicKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
+       *ret_conv = derive_public_key(per_commitment_point_ref, base_point_ref);
+       return (long)ret_conv;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelPublicKeys_get_delayed_payment_basepoint(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1private_1revocation_1key(JNIEnv * _env, jclass _b, jbyteArray per_commitment_secret, jbyteArray countersignatory_revocation_base_secret) {
+       unsigned char per_commitment_secret_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_secret) == 32);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_secret, 0, 32, per_commitment_secret_arr);
+       unsigned char (*per_commitment_secret_ref)[32] = &per_commitment_secret_arr;
+       unsigned char countersignatory_revocation_base_secret_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, countersignatory_revocation_base_secret) == 32);
+       (*_env)->GetByteArrayRegion (_env, countersignatory_revocation_base_secret, 0, 32, countersignatory_revocation_base_secret_arr);
+       unsigned char (*countersignatory_revocation_base_secret_ref)[32] = &countersignatory_revocation_base_secret_arr;
+       LDKCResult_SecretKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_SecretKeySecpErrorZ), "LDKCResult_SecretKeySecpErrorZ");
+       *ret_conv = derive_private_revocation_key(per_commitment_secret_ref, countersignatory_revocation_base_secret_ref);
+       return (long)ret_conv;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelPublicKeys_set_delayed_payment_basepoint(this_ptr_conv, val_conv);
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_derive_1public_1revocation_1key(JNIEnv * _env, jclass _b, jbyteArray per_commitment_point, jbyteArray countersignatory_revocation_base_point) {
+       LDKPublicKey per_commitment_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_point, 0, 33, per_commitment_point_ref.compressed_form);
+       LDKPublicKey countersignatory_revocation_base_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, countersignatory_revocation_base_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, countersignatory_revocation_base_point, 0, 33, countersignatory_revocation_base_point_ref.compressed_form);
+       LDKCResult_PublicKeySecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_PublicKeySecpErrorZ), "LDKCResult_PublicKeySecpErrorZ");
+       *ret_conv = derive_public_revocation_key(per_commitment_point_ref, countersignatory_revocation_base_point_ref);
+       return (long)ret_conv;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelPublicKeys_get_htlc_basepoint(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       TxCreationKeys_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKTxCreationKeys orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKTxCreationKeys ret_var = TxCreationKeys_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, TxCreationKeys_get_per_commitment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       TxCreationKeys_set_per_commitment_point(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1revocation_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, TxCreationKeys_get_revocation_key(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1revocation_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       TxCreationKeys_set_revocation_key(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1broadcaster_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, TxCreationKeys_get_broadcaster_htlc_key(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1broadcaster_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       TxCreationKeys_set_broadcaster_htlc_key(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1countersignatory_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, TxCreationKeys_get_countersignatory_htlc_key(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1countersignatory_1htlc_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       TxCreationKeys_set_countersignatory_htlc_key(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1get_1broadcaster_1delayed_1payment_1key(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, TxCreationKeys_get_broadcaster_delayed_payment_key(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1set_1broadcaster_1delayed_1payment_1key(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       TxCreationKeys_set_broadcaster_delayed_payment_key(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1new(JNIEnv * _env, jclass _b, jbyteArray per_commitment_point_arg, jbyteArray revocation_key_arg, jbyteArray broadcaster_htlc_key_arg, jbyteArray countersignatory_htlc_key_arg, jbyteArray broadcaster_delayed_payment_key_arg) {
+       LDKPublicKey per_commitment_point_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_point_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_point_arg, 0, 33, per_commitment_point_arg_ref.compressed_form);
+       LDKPublicKey revocation_key_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, revocation_key_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, revocation_key_arg, 0, 33, revocation_key_arg_ref.compressed_form);
+       LDKPublicKey broadcaster_htlc_key_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, broadcaster_htlc_key_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, broadcaster_htlc_key_arg, 0, 33, broadcaster_htlc_key_arg_ref.compressed_form);
+       LDKPublicKey countersignatory_htlc_key_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, countersignatory_htlc_key_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, countersignatory_htlc_key_arg, 0, 33, countersignatory_htlc_key_arg_ref.compressed_form);
+       LDKPublicKey broadcaster_delayed_payment_key_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, broadcaster_delayed_payment_key_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, broadcaster_delayed_payment_key_arg, 0, 33, broadcaster_delayed_payment_key_arg_ref.compressed_form);
+       LDKTxCreationKeys ret_var = TxCreationKeys_new(per_commitment_point_arg_ref, revocation_key_arg_ref, broadcaster_htlc_key_arg_ref, countersignatory_htlc_key_arg_ref, broadcaster_delayed_payment_key_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKTxCreationKeys obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = TxCreationKeys_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKTxCreationKeys ret_var = TxCreationKeys_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelPublicKeys* this_ptr_conv = (LDKChannelPublicKeys*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelPublicKeys_set_htlc_basepoint(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1new(JNIEnv * _env, jclass _b, jlong funding_pubkey_arg, jlong revocation_basepoint_arg, jlong payment_point_arg, jlong delayed_payment_basepoint_arg, jlong htlc_basepoint_arg) {
-       LDKPublicKey funding_pubkey_arg_conv = *(LDKPublicKey*)funding_pubkey_arg;
-       FREE((void*)funding_pubkey_arg);
-       LDKPublicKey revocation_basepoint_arg_conv = *(LDKPublicKey*)revocation_basepoint_arg;
-       FREE((void*)revocation_basepoint_arg);
-       LDKPublicKey payment_point_arg_conv = *(LDKPublicKey*)payment_point_arg;
-       FREE((void*)payment_point_arg);
-       LDKPublicKey delayed_payment_basepoint_arg_conv = *(LDKPublicKey*)delayed_payment_basepoint_arg;
-       FREE((void*)delayed_payment_basepoint_arg);
-       LDKPublicKey htlc_basepoint_arg_conv = *(LDKPublicKey*)htlc_basepoint_arg;
-       FREE((void*)htlc_basepoint_arg);
-       LDKChannelPublicKeys* ret = MALLOC(sizeof(LDKChannelPublicKeys), "LDKChannelPublicKeys");
-       *ret = ChannelPublicKeys_new(funding_pubkey_arg_conv, revocation_basepoint_arg_conv, payment_point_arg_conv, delayed_payment_basepoint_arg_conv, htlc_basepoint_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKPreCalculatedTxCreationKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       PreCalculatedTxCreationKeys_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKPreCalculatedTxCreationKeys orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKPreCalculatedTxCreationKeys ret_var = PreCalculatedTxCreationKeys_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKChannelPublicKeys* obj_conv = (LDKChannelPublicKeys*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ChannelPublicKeys_write(obj_conv);
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1new(JNIEnv * _env, jclass _b, jlong keys) {
+       LDKTxCreationKeys keys_conv;
+       keys_conv.inner = (void*)(keys & (~1));
+       keys_conv.is_owned = (keys & 1) || (keys == 0);
+       if (keys_conv.inner != NULL)
+               keys_conv = TxCreationKeys_clone(&keys_conv);
+       LDKPreCalculatedTxCreationKeys ret_var = PreCalculatedTxCreationKeys_new(keys_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKChannelPublicKeys* ret = MALLOC(sizeof(LDKChannelPublicKeys), "LDKChannelPublicKeys");
-       *ret = ChannelPublicKeys_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1trust_1key_1derivation(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKPreCalculatedTxCreationKeys this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKTxCreationKeys ret_var = PreCalculatedTxCreationKeys_trust_key_derivation(&this_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1derive_1new(JNIEnv * _env, jclass _b, jlong per_commitment_point, jlong broadcaster_delayed_payment_base, jlong broadcaster_htlc_base, jlong countersignatory_revocation_base, jlong countersignatory_htlc_base) {
-       LDKPublicKey per_commitment_point_conv = *(LDKPublicKey*)per_commitment_point;
-       FREE((void*)per_commitment_point);
-       LDKPublicKey broadcaster_delayed_payment_base_conv = *(LDKPublicKey*)broadcaster_delayed_payment_base;
-       FREE((void*)broadcaster_delayed_payment_base);
-       LDKPublicKey broadcaster_htlc_base_conv = *(LDKPublicKey*)broadcaster_htlc_base;
-       FREE((void*)broadcaster_htlc_base);
-       LDKPublicKey countersignatory_revocation_base_conv = *(LDKPublicKey*)countersignatory_revocation_base;
-       FREE((void*)countersignatory_revocation_base);
-       LDKPublicKey countersignatory_htlc_base_conv = *(LDKPublicKey*)countersignatory_htlc_base;
-       FREE((void*)countersignatory_htlc_base);
-       LDKCResult_TxCreationKeysSecpErrorZ* ret = MALLOC(sizeof(LDKCResult_TxCreationKeysSecpErrorZ), "LDKCResult_TxCreationKeysSecpErrorZ");
-       *ret = TxCreationKeys_derive_new(per_commitment_point_conv, broadcaster_delayed_payment_base_conv, broadcaster_htlc_base_conv, countersignatory_revocation_base_conv, countersignatory_htlc_base_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_PreCalculatedTxCreationKeys_1per_1commitment_1point(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKPreCalculatedTxCreationKeys this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, PreCalculatedTxCreationKeys_per_commitment_point(&this_arg_conv).compressed_form);
+       return arg_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_get_1revokeable_1redeemscript(JNIEnv * _env, jclass _b, jlong revocation_key, jshort contest_delay, jlong broadcaster_delayed_payment_key) {
-       LDKPublicKey revocation_key_conv = *(LDKPublicKey*)revocation_key;
-       FREE((void*)revocation_key);
-       LDKPublicKey broadcaster_delayed_payment_key_conv = *(LDKPublicKey*)broadcaster_delayed_payment_key;
-       FREE((void*)broadcaster_delayed_payment_key);
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = get_revokeable_redeemscript(revocation_key_conv, contest_delay, broadcaster_delayed_payment_key_conv);
-       return (long)ret;
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelPublicKeys_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKChannelPublicKeys orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKChannelPublicKeys ret_var = ChannelPublicKeys_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelPublicKeys_get_funding_pubkey(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1funding_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelPublicKeys_set_funding_pubkey(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelPublicKeys_get_revocation_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1revocation_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelPublicKeys_set_revocation_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelPublicKeys_get_payment_point(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1payment_1point(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelPublicKeys_set_payment_point(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelPublicKeys_get_delayed_payment_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1delayed_1payment_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelPublicKeys_set_delayed_payment_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1get_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelPublicKeys_get_htlc_basepoint(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1set_1htlc_1basepoint(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelPublicKeys this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelPublicKeys_set_htlc_basepoint(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1new(JNIEnv * _env, jclass _b, jbyteArray funding_pubkey_arg, jbyteArray revocation_basepoint_arg, jbyteArray payment_point_arg, jbyteArray delayed_payment_basepoint_arg, jbyteArray htlc_basepoint_arg) {
+       LDKPublicKey funding_pubkey_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, funding_pubkey_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, funding_pubkey_arg, 0, 33, funding_pubkey_arg_ref.compressed_form);
+       LDKPublicKey revocation_basepoint_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, revocation_basepoint_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, revocation_basepoint_arg, 0, 33, revocation_basepoint_arg_ref.compressed_form);
+       LDKPublicKey payment_point_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, payment_point_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, payment_point_arg, 0, 33, payment_point_arg_ref.compressed_form);
+       LDKPublicKey delayed_payment_basepoint_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, delayed_payment_basepoint_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, delayed_payment_basepoint_arg, 0, 33, delayed_payment_basepoint_arg_ref.compressed_form);
+       LDKPublicKey htlc_basepoint_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, htlc_basepoint_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, htlc_basepoint_arg, 0, 33, htlc_basepoint_arg_ref.compressed_form);
+       LDKChannelPublicKeys ret_var = ChannelPublicKeys_new(funding_pubkey_arg_ref, revocation_basepoint_arg_ref, payment_point_arg_ref, delayed_payment_basepoint_arg_ref, htlc_basepoint_arg_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKChannelPublicKeys obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ChannelPublicKeys_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelPublicKeys_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKChannelPublicKeys ret_var = ChannelPublicKeys_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_TxCreationKeys_1derive_1new(JNIEnv * _env, jclass _b, jbyteArray per_commitment_point, jbyteArray broadcaster_delayed_payment_base, jbyteArray broadcaster_htlc_base, jbyteArray countersignatory_revocation_base, jbyteArray countersignatory_htlc_base) {
+       LDKPublicKey per_commitment_point_ref;
+       CHECK((*_env)->GetArrayLength (_env, per_commitment_point) == 33);
+       (*_env)->GetByteArrayRegion (_env, per_commitment_point, 0, 33, per_commitment_point_ref.compressed_form);
+       LDKPublicKey broadcaster_delayed_payment_base_ref;
+       CHECK((*_env)->GetArrayLength (_env, broadcaster_delayed_payment_base) == 33);
+       (*_env)->GetByteArrayRegion (_env, broadcaster_delayed_payment_base, 0, 33, broadcaster_delayed_payment_base_ref.compressed_form);
+       LDKPublicKey broadcaster_htlc_base_ref;
+       CHECK((*_env)->GetArrayLength (_env, broadcaster_htlc_base) == 33);
+       (*_env)->GetByteArrayRegion (_env, broadcaster_htlc_base, 0, 33, broadcaster_htlc_base_ref.compressed_form);
+       LDKPublicKey countersignatory_revocation_base_ref;
+       CHECK((*_env)->GetArrayLength (_env, countersignatory_revocation_base) == 33);
+       (*_env)->GetByteArrayRegion (_env, countersignatory_revocation_base, 0, 33, countersignatory_revocation_base_ref.compressed_form);
+       LDKPublicKey countersignatory_htlc_base_ref;
+       CHECK((*_env)->GetArrayLength (_env, countersignatory_htlc_base) == 33);
+       (*_env)->GetByteArrayRegion (_env, countersignatory_htlc_base, 0, 33, countersignatory_htlc_base_ref.compressed_form);
+       LDKCResult_TxCreationKeysSecpErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_TxCreationKeysSecpErrorZ), "LDKCResult_TxCreationKeysSecpErrorZ");
+       *ret_conv = TxCreationKeys_derive_new(per_commitment_point_ref, broadcaster_delayed_payment_base_ref, broadcaster_htlc_base_ref, countersignatory_revocation_base_ref, countersignatory_htlc_base_ref);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1revokeable_1redeemscript(JNIEnv * _env, jclass _b, jbyteArray revocation_key, jshort contest_delay, jbyteArray broadcaster_delayed_payment_key) {
+       LDKPublicKey revocation_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, revocation_key) == 33);
+       (*_env)->GetByteArrayRegion (_env, revocation_key, 0, 33, revocation_key_ref.compressed_form);
+       LDKPublicKey broadcaster_delayed_payment_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, broadcaster_delayed_payment_key) == 33);
+       (*_env)->GetByteArrayRegion (_env, broadcaster_delayed_payment_key, 0, 33, broadcaster_delayed_payment_key_ref.compressed_form);
+       LDKCVec_u8Z arg_var = get_revokeable_redeemscript(revocation_key_ref, contest_delay, broadcaster_delayed_payment_key_ref);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHTLCOutputInCommitment this_ptr_conv = *(LDKHTLCOutputInCommitment*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return HTLCOutputInCommitment_free(this_ptr_conv);
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       HTLCOutputInCommitment_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKHTLCOutputInCommitment orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKHTLCOutputInCommitment ret_var = HTLCOutputInCommitment_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1get_1offered(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
-       return HTLCOutputInCommitment_get_offered(this_ptr_conv);
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = HTLCOutputInCommitment_get_offered(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1set_1offered(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
-       return HTLCOutputInCommitment_set_offered(this_ptr_conv, val);
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       HTLCOutputInCommitment_set_offered(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1get_1amount_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
-       return HTLCOutputInCommitment_get_amount_msat(this_ptr_conv);
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = HTLCOutputInCommitment_get_amount_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1set_1amount_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
-       return HTLCOutputInCommitment_set_amount_msat(this_ptr_conv, val);
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       HTLCOutputInCommitment_set_amount_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1get_1cltv_1expiry(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
-       return HTLCOutputInCommitment_get_cltv_expiry(this_ptr_conv);
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = HTLCOutputInCommitment_get_cltv_expiry(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1set_1cltv_1expiry(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
-       return HTLCOutputInCommitment_set_cltv_expiry(this_ptr_conv, val);
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       HTLCOutputInCommitment_set_cltv_expiry(&this_ptr_conv, val);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1get_1payment_1hash(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *HTLCOutputInCommitment_get_payment_hash(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *HTLCOutputInCommitment_get_payment_hash(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1set_1payment_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKHTLCOutputInCommitment* this_ptr_conv = (LDKHTLCOutputInCommitment*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return HTLCOutputInCommitment_set_payment_hash(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKHTLCOutputInCommitment* obj_conv = (LDKHTLCOutputInCommitment*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = HTLCOutputInCommitment_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKHTLCOutputInCommitment* ret = MALLOC(sizeof(LDKHTLCOutputInCommitment), "LDKHTLCOutputInCommitment");
-       *ret = HTLCOutputInCommitment_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_get_1htlc_1redeemscript(JNIEnv * _env, jclass _b, jlong htlc, jlong keys) {
-       LDKHTLCOutputInCommitment* htlc_conv = (LDKHTLCOutputInCommitment*)htlc;
-       LDKTxCreationKeys* keys_conv = (LDKTxCreationKeys*)keys;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = get_htlc_redeemscript(htlc_conv, keys_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_make_1funding_1redeemscript(JNIEnv * _env, jclass _b, jlong broadcaster, jlong countersignatory) {
-       LDKPublicKey broadcaster_conv = *(LDKPublicKey*)broadcaster;
-       FREE((void*)broadcaster);
-       LDKPublicKey countersignatory_conv = *(LDKPublicKey*)countersignatory;
-       FREE((void*)countersignatory);
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = make_funding_redeemscript(broadcaster_conv, countersignatory_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_build_1htlc_1transaction(JNIEnv * _env, jclass _b, jbyteArray prev_hash, jint feerate_per_kw, jshort contest_delay, jlong htlc, jlong broadcaster_delayed_payment_key, jlong revocation_key) {
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1set_1payment_1hash(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKHTLCOutputInCommitment this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       HTLCOutputInCommitment_set_payment_hash(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKHTLCOutputInCommitment obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = HTLCOutputInCommitment_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HTLCOutputInCommitment_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKHTLCOutputInCommitment ret_var = HTLCOutputInCommitment_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1htlc_1redeemscript(JNIEnv * _env, jclass _b, jlong htlc, jlong keys) {
+       LDKHTLCOutputInCommitment htlc_conv;
+       htlc_conv.inner = (void*)(htlc & (~1));
+       htlc_conv.is_owned = (htlc & 1) || (htlc == 0);
+       LDKTxCreationKeys keys_conv;
+       keys_conv.inner = (void*)(keys & (~1));
+       keys_conv.is_owned = (keys & 1) || (keys == 0);
+       LDKCVec_u8Z arg_var = get_htlc_redeemscript(&htlc_conv, &keys_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_make_1funding_1redeemscript(JNIEnv * _env, jclass _b, jbyteArray broadcaster, jbyteArray countersignatory) {
+       LDKPublicKey broadcaster_ref;
+       CHECK((*_env)->GetArrayLength (_env, broadcaster) == 33);
+       (*_env)->GetByteArrayRegion (_env, broadcaster, 0, 33, broadcaster_ref.compressed_form);
+       LDKPublicKey countersignatory_ref;
+       CHECK((*_env)->GetArrayLength (_env, countersignatory) == 33);
+       (*_env)->GetByteArrayRegion (_env, countersignatory, 0, 33, countersignatory_ref.compressed_form);
+       LDKCVec_u8Z arg_var = make_funding_redeemscript(broadcaster_ref, countersignatory_ref);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_build_1htlc_1transaction(JNIEnv * _env, jclass _b, jbyteArray prev_hash, jint feerate_per_kw, jshort contest_delay, jlong htlc, jbyteArray broadcaster_delayed_payment_key, jbyteArray revocation_key) {
        unsigned char prev_hash_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, prev_hash) == 32);
        (*_env)->GetByteArrayRegion (_env, prev_hash, 0, 32, prev_hash_arr);
        unsigned char (*prev_hash_ref)[32] = &prev_hash_arr;
-       LDKHTLCOutputInCommitment* htlc_conv = (LDKHTLCOutputInCommitment*)htlc;
-       LDKPublicKey broadcaster_delayed_payment_key_conv = *(LDKPublicKey*)broadcaster_delayed_payment_key;
-       FREE((void*)broadcaster_delayed_payment_key);
-       LDKPublicKey revocation_key_conv = *(LDKPublicKey*)revocation_key;
-       FREE((void*)revocation_key);
-       LDKTransaction* ret = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
-       *ret = build_htlc_transaction(prev_hash_ref, feerate_per_kw, contest_delay, htlc_conv, broadcaster_delayed_payment_key_conv, revocation_key_conv);
-       return (long)ret;
+       LDKHTLCOutputInCommitment htlc_conv;
+       htlc_conv.inner = (void*)(htlc & (~1));
+       htlc_conv.is_owned = (htlc & 1) || (htlc == 0);
+       LDKPublicKey broadcaster_delayed_payment_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, broadcaster_delayed_payment_key) == 33);
+       (*_env)->GetByteArrayRegion (_env, broadcaster_delayed_payment_key, 0, 33, broadcaster_delayed_payment_key_ref.compressed_form);
+       LDKPublicKey revocation_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, revocation_key) == 33);
+       (*_env)->GetByteArrayRegion (_env, revocation_key, 0, 33, revocation_key_ref.compressed_form);
+       LDKTransaction *ret_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *ret_copy = build_htlc_transaction(prev_hash_ref, feerate_per_kw, contest_delay, &htlc_conv, broadcaster_delayed_payment_key_ref, revocation_key_ref);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHolderCommitmentTransaction this_ptr_conv = *(LDKHolderCommitmentTransaction*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return HolderCommitmentTransaction_free(this_ptr_conv);
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       HolderCommitmentTransaction_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKHolderCommitmentTransaction orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKHolderCommitmentTransaction ret_var = HolderCommitmentTransaction_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1get_1unsigned_1tx(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHolderCommitmentTransaction* this_ptr_conv = (LDKHolderCommitmentTransaction*)this_ptr;
-       LDKTransaction* ret = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
-       *ret = HolderCommitmentTransaction_get_unsigned_tx(this_ptr_conv);
-       return (long)ret;
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKTransaction *ret_copy = MALLOC(sizeof(LDKTransaction), "LDKTransaction");
+       *ret_copy = HolderCommitmentTransaction_get_unsigned_tx(&this_ptr_conv);
+       long ret_ref = (long)ret_copy;
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1set_1unsigned_1tx(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKHolderCommitmentTransaction* this_ptr_conv = (LDKHolderCommitmentTransaction*)this_ptr;
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        LDKTransaction val_conv = *(LDKTransaction*)val;
-       FREE((void*)val);
-       return HolderCommitmentTransaction_set_unsigned_tx(this_ptr_conv, val_conv);
+       HolderCommitmentTransaction_set_unsigned_tx(&this_ptr_conv, val_conv);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1get_1counterparty_1sig(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHolderCommitmentTransaction* this_ptr_conv = (LDKHolderCommitmentTransaction*)this_ptr;
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = HolderCommitmentTransaction_get_counterparty_sig(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1get_1counterparty_1sig(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, HolderCommitmentTransaction_get_counterparty_sig(&this_ptr_conv).compact_form);
+       return arg_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1set_1counterparty_1sig(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKHolderCommitmentTransaction* this_ptr_conv = (LDKHolderCommitmentTransaction*)this_ptr;
-       LDKSignature val_conv = *(LDKSignature*)val;
-       FREE((void*)val);
-       return HolderCommitmentTransaction_set_counterparty_sig(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1set_1counterparty_1sig(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKSignature val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 64);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 64, val_ref.compact_form);
+       HolderCommitmentTransaction_set_counterparty_sig(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1get_1feerate_1per_1kw(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKHolderCommitmentTransaction* this_ptr_conv = (LDKHolderCommitmentTransaction*)this_ptr;
-       return HolderCommitmentTransaction_get_feerate_per_kw(this_ptr_conv);
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = HolderCommitmentTransaction_get_feerate_per_kw(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1set_1feerate_1per_1kw(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKHolderCommitmentTransaction* this_ptr_conv = (LDKHolderCommitmentTransaction*)this_ptr;
-       return HolderCommitmentTransaction_set_feerate_per_kw(this_ptr_conv, val);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1set_1per_1htlc(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKHolderCommitmentTransaction* this_ptr_conv = (LDKHolderCommitmentTransaction*)this_ptr;
-       LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ val_conv = *(LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ*)val;
-       FREE((void*)val);
-       return HolderCommitmentTransaction_set_per_htlc(this_ptr_conv, val_conv);
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       HolderCommitmentTransaction_set_feerate_per_kw(&this_ptr_conv, val);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1set_1per_1htlc(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKHolderCommitmentTransaction this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ), "LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t q = 0; q < val_constr.datalen; q++) {
+               long arr_conv_42 = val_vals[q];
+               LDKC2Tuple_HTLCOutputInCommitmentSignatureZ arr_conv_42_conv = *(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ*)arr_conv_42;
+               FREE((void*)arr_conv_42);
+               val_constr.data[q] = arr_conv_42_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       HolderCommitmentTransaction_set_per_htlc(&this_ptr_conv, val_constr);
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1new_1missing_1holder_1sig(JNIEnv * _env, jclass _b, jlong unsigned_tx, jlong counterparty_sig, jlong holder_funding_key, jlong counterparty_funding_key, jlong keys, jint feerate_per_kw, jlong htlc_data) {
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1new_1missing_1holder_1sig(JNIEnv * _env, jclass _b, jlong unsigned_tx, jbyteArray counterparty_sig, jbyteArray holder_funding_key, jbyteArray counterparty_funding_key, jlong keys, jint feerate_per_kw, jlongArray htlc_data) {
        LDKTransaction unsigned_tx_conv = *(LDKTransaction*)unsigned_tx;
-       FREE((void*)unsigned_tx);
-       LDKSignature counterparty_sig_conv = *(LDKSignature*)counterparty_sig;
-       FREE((void*)counterparty_sig);
-       LDKPublicKey holder_funding_key_conv = *(LDKPublicKey*)holder_funding_key;
-       FREE((void*)holder_funding_key);
-       LDKPublicKey counterparty_funding_key_conv = *(LDKPublicKey*)counterparty_funding_key;
-       FREE((void*)counterparty_funding_key);
-       LDKTxCreationKeys keys_conv = *(LDKTxCreationKeys*)keys;
-       FREE((void*)keys);
-       keys_conv.is_owned = true;
-       LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ htlc_data_conv = *(LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ*)htlc_data;
-       FREE((void*)htlc_data);
-       LDKHolderCommitmentTransaction* ret = MALLOC(sizeof(LDKHolderCommitmentTransaction), "LDKHolderCommitmentTransaction");
-       *ret = HolderCommitmentTransaction_new_missing_holder_sig(unsigned_tx_conv, counterparty_sig_conv, holder_funding_key_conv, counterparty_funding_key_conv, keys_conv, feerate_per_kw, htlc_data_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKSignature counterparty_sig_ref;
+       CHECK((*_env)->GetArrayLength (_env, counterparty_sig) == 64);
+       (*_env)->GetByteArrayRegion (_env, counterparty_sig, 0, 64, counterparty_sig_ref.compact_form);
+       LDKPublicKey holder_funding_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, holder_funding_key) == 33);
+       (*_env)->GetByteArrayRegion (_env, holder_funding_key, 0, 33, holder_funding_key_ref.compressed_form);
+       LDKPublicKey counterparty_funding_key_ref;
+       CHECK((*_env)->GetArrayLength (_env, counterparty_funding_key) == 33);
+       (*_env)->GetByteArrayRegion (_env, counterparty_funding_key, 0, 33, counterparty_funding_key_ref.compressed_form);
+       LDKTxCreationKeys keys_conv;
+       keys_conv.inner = (void*)(keys & (~1));
+       keys_conv.is_owned = (keys & 1) || (keys == 0);
+       if (keys_conv.inner != NULL)
+               keys_conv = TxCreationKeys_clone(&keys_conv);
+       LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ htlc_data_constr;
+       htlc_data_constr.datalen = (*_env)->GetArrayLength (_env, htlc_data);
+       if (htlc_data_constr.datalen > 0)
+               htlc_data_constr.data = MALLOC(htlc_data_constr.datalen * sizeof(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ), "LDKCVec_C2Tuple_HTLCOutputInCommitmentSignatureZZ Elements");
+       else
+               htlc_data_constr.data = NULL;
+       long* htlc_data_vals = (*_env)->GetLongArrayElements (_env, htlc_data, NULL);
+       for (size_t q = 0; q < htlc_data_constr.datalen; q++) {
+               long arr_conv_42 = htlc_data_vals[q];
+               LDKC2Tuple_HTLCOutputInCommitmentSignatureZ arr_conv_42_conv = *(LDKC2Tuple_HTLCOutputInCommitmentSignatureZ*)arr_conv_42;
+               FREE((void*)arr_conv_42);
+               htlc_data_constr.data[q] = arr_conv_42_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, htlc_data, htlc_data_vals, 0);
+       LDKHolderCommitmentTransaction ret_var = HolderCommitmentTransaction_new_missing_holder_sig(unsigned_tx_conv, counterparty_sig_ref, holder_funding_key_ref, counterparty_funding_key_ref, keys_conv, feerate_per_kw, htlc_data_constr);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1trust_1key_1derivation(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKHolderCommitmentTransaction* this_arg_conv = (LDKHolderCommitmentTransaction*)this_arg;
-       LDKTxCreationKeys* ret = MALLOC(sizeof(LDKTxCreationKeys), "LDKTxCreationKeys");
-       *ret = HolderCommitmentTransaction_trust_key_derivation(this_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKHolderCommitmentTransaction this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKTxCreationKeys ret_var = HolderCommitmentTransaction_trust_key_derivation(&this_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1txid(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKHolderCommitmentTransaction* this_arg_conv = (LDKHolderCommitmentTransaction*)this_arg;
-       LDKThirtyTwoBytes* ret = MALLOC(sizeof(LDKThirtyTwoBytes), "LDKThirtyTwoBytes");
-       *ret = HolderCommitmentTransaction_txid(this_arg_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1txid(JNIEnv * _env, jclass _b, jlong this_arg) {
+       LDKHolderCommitmentTransaction this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 32);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 32, HolderCommitmentTransaction_txid(&this_arg_conv).data);
+       return arg_arr;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1get_1holder_1sig(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray funding_key, jlong funding_redeemscript, jlong channel_value_satoshis) {
-       LDKHolderCommitmentTransaction* this_arg_conv = (LDKHolderCommitmentTransaction*)this_arg;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1get_1holder_1sig(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray funding_key, jbyteArray funding_redeemscript, jlong channel_value_satoshis) {
+       LDKHolderCommitmentTransaction this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char funding_key_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, funding_key) == 32);
        (*_env)->GetByteArrayRegion (_env, funding_key, 0, 32, funding_key_arr);
        unsigned char (*funding_key_ref)[32] = &funding_key_arr;
-       LDKu8slice funding_redeemscript_conv = *(LDKu8slice*)funding_redeemscript;
-       FREE((void*)funding_redeemscript);
-       LDKSignature* ret = MALLOC(sizeof(LDKSignature), "LDKSignature");
-       *ret = HolderCommitmentTransaction_get_holder_sig(this_arg_conv, funding_key_ref, funding_redeemscript_conv, channel_value_satoshis);
-       return (long)ret;
+       LDKu8slice funding_redeemscript_ref;
+       funding_redeemscript_ref.data = (*_env)->GetByteArrayElements (_env, funding_redeemscript, NULL);
+       funding_redeemscript_ref.datalen = (*_env)->GetArrayLength (_env, funding_redeemscript);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 64);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 64, HolderCommitmentTransaction_get_holder_sig(&this_arg_conv, funding_key_ref, funding_redeemscript_ref, channel_value_satoshis).compact_form);
+       (*_env)->ReleaseByteArrayElements(_env, funding_redeemscript, (int8_t*)funding_redeemscript_ref.data, 0);
+       return arg_arr;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1get_1htlc_1sigs(JNIEnv * _env, jclass _b, jlong this_arg, jbyteArray htlc_base_key, jshort counterparty_selected_contest_delay) {
-       LDKHolderCommitmentTransaction* this_arg_conv = (LDKHolderCommitmentTransaction*)this_arg;
+       LDKHolderCommitmentTransaction this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        unsigned char htlc_base_key_arr[32];
+       CHECK((*_env)->GetArrayLength (_env, htlc_base_key) == 32);
        (*_env)->GetByteArrayRegion (_env, htlc_base_key, 0, 32, htlc_base_key_arr);
        unsigned char (*htlc_base_key_ref)[32] = &htlc_base_key_arr;
-       LDKCResult_CVec_SignatureZNoneZ* ret = MALLOC(sizeof(LDKCResult_CVec_SignatureZNoneZ), "LDKCResult_CVec_SignatureZNoneZ");
-       *ret = HolderCommitmentTransaction_get_htlc_sigs(this_arg_conv, htlc_base_key_ref, counterparty_selected_contest_delay);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKHolderCommitmentTransaction* obj_conv = (LDKHolderCommitmentTransaction*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = HolderCommitmentTransaction_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKHolderCommitmentTransaction* ret = MALLOC(sizeof(LDKHolderCommitmentTransaction), "LDKHolderCommitmentTransaction");
-       *ret = HolderCommitmentTransaction_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKCResult_CVec_SignatureZNoneZ* ret_conv = MALLOC(sizeof(LDKCResult_CVec_SignatureZNoneZ), "LDKCResult_CVec_SignatureZNoneZ");
+       *ret_conv = HolderCommitmentTransaction_get_htlc_sigs(&this_arg_conv, htlc_base_key_ref, counterparty_selected_contest_delay);
+       return (long)ret_conv;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKHolderCommitmentTransaction obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = HolderCommitmentTransaction_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_HolderCommitmentTransaction_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKHolderCommitmentTransaction ret_var = HolderCommitmentTransaction_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_InitFeatures_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKInitFeatures this_ptr_conv = *(LDKInitFeatures*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return InitFeatures_free(this_ptr_conv);
+       LDKInitFeatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       InitFeatures_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeFeatures_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeFeatures this_ptr_conv = *(LDKNodeFeatures*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return NodeFeatures_free(this_ptr_conv);
+       LDKNodeFeatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       NodeFeatures_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelFeatures_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelFeatures this_ptr_conv = *(LDKChannelFeatures*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelFeatures_free(this_ptr_conv);
+       LDKChannelFeatures this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelFeatures_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHop this_ptr_conv = *(LDKRouteHop*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return RouteHop_free(this_ptr_conv);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHop_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKRouteHop orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKRouteHop ret_var = RouteHop_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1get_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = RouteHop_get_pubkey(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_RouteHop_1get_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, RouteHop_get_pubkey(&this_ptr_conv).compressed_form);
+       return arg_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1set_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return RouteHop_set_pubkey(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1set_1pubkey(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       RouteHop_set_pubkey(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1get_1node_1features(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       LDKNodeFeatures* ret = MALLOC(sizeof(LDKNodeFeatures), "LDKNodeFeatures");
-       *ret = RouteHop_get_node_features(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeFeatures ret_var = RouteHop_get_node_features(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1set_1node_1features(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       LDKNodeFeatures val_conv = *(LDKNodeFeatures*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return RouteHop_set_node_features(this_ptr_conv, val_conv);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeFeatures val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       RouteHop_set_node_features(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1get_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       return RouteHop_get_short_channel_id(this_ptr_conv);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = RouteHop_get_short_channel_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1set_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       return RouteHop_set_short_channel_id(this_ptr_conv, val);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHop_set_short_channel_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1get_1channel_1features(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       LDKChannelFeatures* ret = MALLOC(sizeof(LDKChannelFeatures), "LDKChannelFeatures");
-       *ret = RouteHop_get_channel_features(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelFeatures ret_var = RouteHop_get_channel_features(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1set_1channel_1features(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       LDKChannelFeatures val_conv = *(LDKChannelFeatures*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return RouteHop_set_channel_features(this_ptr_conv, val_conv);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelFeatures val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       RouteHop_set_channel_features(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1get_1fee_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       return RouteHop_get_fee_msat(this_ptr_conv);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = RouteHop_get_fee_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1set_1fee_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       return RouteHop_set_fee_msat(this_ptr_conv, val);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHop_set_fee_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_RouteHop_1get_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       return RouteHop_get_cltv_expiry_delta(this_ptr_conv);
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = RouteHop_get_cltv_expiry_delta(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHop_1set_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKRouteHop* this_ptr_conv = (LDKRouteHop*)this_ptr;
-       return RouteHop_set_cltv_expiry_delta(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1new(JNIEnv * _env, jclass _b, jlong pubkey_arg, jlong node_features_arg, jlong short_channel_id_arg, jlong channel_features_arg, jlong fee_msat_arg, jint cltv_expiry_delta_arg) {
-       LDKPublicKey pubkey_arg_conv = *(LDKPublicKey*)pubkey_arg;
-       FREE((void*)pubkey_arg);
-       LDKNodeFeatures node_features_arg_conv = *(LDKNodeFeatures*)node_features_arg;
-       FREE((void*)node_features_arg);
-       node_features_arg_conv.is_owned = true;
-       LDKChannelFeatures channel_features_arg_conv = *(LDKChannelFeatures*)channel_features_arg;
-       FREE((void*)channel_features_arg);
-       channel_features_arg_conv.is_owned = true;
-       LDKRouteHop* ret = MALLOC(sizeof(LDKRouteHop), "LDKRouteHop");
-       *ret = RouteHop_new(pubkey_arg_conv, node_features_arg_conv, short_channel_id_arg, channel_features_arg_conv, fee_msat_arg, cltv_expiry_delta_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKRouteHop this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHop_set_cltv_expiry_delta(&this_ptr_conv, val);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHop_1new(JNIEnv * _env, jclass _b, jbyteArray pubkey_arg, jlong node_features_arg, jlong short_channel_id_arg, jlong channel_features_arg, jlong fee_msat_arg, jint cltv_expiry_delta_arg) {
+       LDKPublicKey pubkey_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, pubkey_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, pubkey_arg, 0, 33, pubkey_arg_ref.compressed_form);
+       LDKNodeFeatures node_features_arg_conv;
+       node_features_arg_conv.inner = (void*)(node_features_arg & (~1));
+       node_features_arg_conv.is_owned = (node_features_arg & 1) || (node_features_arg == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKChannelFeatures channel_features_arg_conv;
+       channel_features_arg_conv.inner = (void*)(channel_features_arg & (~1));
+       channel_features_arg_conv.is_owned = (channel_features_arg & 1) || (channel_features_arg == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKRouteHop ret_var = RouteHop_new(pubkey_arg_ref, node_features_arg_conv, short_channel_id_arg, channel_features_arg_conv, fee_msat_arg, cltv_expiry_delta_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Route_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRoute this_ptr_conv = *(LDKRoute*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return Route_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Route_1set_1paths(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRoute* this_ptr_conv = (LDKRoute*)this_ptr;
-       LDKCVec_CVec_RouteHopZZ val_conv = *(LDKCVec_CVec_RouteHopZZ*)val;
-       FREE((void*)val);
-       return Route_set_paths(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Route_1new(JNIEnv * _env, jclass _b, jlong paths_arg) {
-       LDKCVec_CVec_RouteHopZZ paths_arg_conv = *(LDKCVec_CVec_RouteHopZZ*)paths_arg;
-       FREE((void*)paths_arg);
-       LDKRoute* ret = MALLOC(sizeof(LDKRoute), "LDKRoute");
-       *ret = Route_new(paths_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Route_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKRoute* obj_conv = (LDKRoute*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = Route_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Route_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKRoute* ret = MALLOC(sizeof(LDKRoute), "LDKRoute");
-       *ret = Route_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKRoute this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       Route_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Route_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKRoute orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKRoute ret_var = Route_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_Route_1set_1paths(JNIEnv * _env, jclass _b, jlong this_ptr, jobjectArray val) {
+       LDKRoute this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_CVec_RouteHopZZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKCVec_RouteHopZ), "LDKCVec_CVec_RouteHopZZ Elements");
+       else
+               val_constr.data = NULL;
+       for (size_t m = 0; m < val_constr.datalen; m++) {
+               jobject arr_conv_12 = (*_env)->GetObjectArrayElement(_env, val, m);
+               LDKCVec_RouteHopZ arr_conv_12_constr;
+               arr_conv_12_constr.datalen = (*_env)->GetArrayLength (_env, arr_conv_12);
+               if (arr_conv_12_constr.datalen > 0)
+                       arr_conv_12_constr.data = MALLOC(arr_conv_12_constr.datalen * sizeof(LDKRouteHop), "LDKCVec_RouteHopZ Elements");
+               else
+                       arr_conv_12_constr.data = NULL;
+               long* arr_conv_12_vals = (*_env)->GetLongArrayElements (_env, arr_conv_12, NULL);
+               for (size_t k = 0; k < arr_conv_12_constr.datalen; k++) {
+                       long arr_conv_10 = arr_conv_12_vals[k];
+                       LDKRouteHop arr_conv_10_conv;
+                       arr_conv_10_conv.inner = (void*)(arr_conv_10 & (~1));
+                       arr_conv_10_conv.is_owned = (arr_conv_10 & 1) || (arr_conv_10 == 0);
+                       if (arr_conv_10_conv.inner != NULL)
+                               arr_conv_10_conv = RouteHop_clone(&arr_conv_10_conv);
+                       arr_conv_12_constr.data[k] = arr_conv_10_conv;
+               }
+               (*_env)->ReleaseLongArrayElements (_env, arr_conv_12, arr_conv_12_vals, 0);
+               val_constr.data[m] = arr_conv_12_constr;
+       }
+       Route_set_paths(&this_ptr_conv, val_constr);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Route_1new(JNIEnv * _env, jclass _b, jobjectArray paths_arg) {
+       LDKCVec_CVec_RouteHopZZ paths_arg_constr;
+       paths_arg_constr.datalen = (*_env)->GetArrayLength (_env, paths_arg);
+       if (paths_arg_constr.datalen > 0)
+               paths_arg_constr.data = MALLOC(paths_arg_constr.datalen * sizeof(LDKCVec_RouteHopZ), "LDKCVec_CVec_RouteHopZZ Elements");
+       else
+               paths_arg_constr.data = NULL;
+       for (size_t m = 0; m < paths_arg_constr.datalen; m++) {
+               jobject arr_conv_12 = (*_env)->GetObjectArrayElement(_env, paths_arg, m);
+               LDKCVec_RouteHopZ arr_conv_12_constr;
+               arr_conv_12_constr.datalen = (*_env)->GetArrayLength (_env, arr_conv_12);
+               if (arr_conv_12_constr.datalen > 0)
+                       arr_conv_12_constr.data = MALLOC(arr_conv_12_constr.datalen * sizeof(LDKRouteHop), "LDKCVec_RouteHopZ Elements");
+               else
+                       arr_conv_12_constr.data = NULL;
+               long* arr_conv_12_vals = (*_env)->GetLongArrayElements (_env, arr_conv_12, NULL);
+               for (size_t k = 0; k < arr_conv_12_constr.datalen; k++) {
+                       long arr_conv_10 = arr_conv_12_vals[k];
+                       LDKRouteHop arr_conv_10_conv;
+                       arr_conv_10_conv.inner = (void*)(arr_conv_10 & (~1));
+                       arr_conv_10_conv.is_owned = (arr_conv_10 & 1) || (arr_conv_10 == 0);
+                       if (arr_conv_10_conv.inner != NULL)
+                               arr_conv_10_conv = RouteHop_clone(&arr_conv_10_conv);
+                       arr_conv_12_constr.data[k] = arr_conv_10_conv;
+               }
+               (*_env)->ReleaseLongArrayElements (_env, arr_conv_12, arr_conv_12_vals, 0);
+               paths_arg_constr.data[m] = arr_conv_12_constr;
+       }
+       LDKRoute ret_var = Route_new(paths_arg_constr);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_Route_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKRoute obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = Route_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_Route_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKRoute ret_var = Route_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHint_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHint this_ptr_conv = *(LDKRouteHint*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return RouteHint_free(this_ptr_conv);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHint_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHint_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKRouteHint orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKRouteHint ret_var = RouteHint_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHint_1get_1src_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = RouteHint_get_src_node_id(this_ptr_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_RouteHint_1get_1src_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, RouteHint_get_src_node_id(&this_ptr_conv).compressed_form);
+       return arg_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHint_1set_1src_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return RouteHint_set_src_node_id(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHint_1set_1src_1node_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       RouteHint_set_src_node_id(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHint_1get_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       return RouteHint_get_short_channel_id(this_ptr_conv);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = RouteHint_get_short_channel_id(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHint_1set_1short_1channel_1id(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       return RouteHint_set_short_channel_id(this_ptr_conv, val);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHint_set_short_channel_id(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHint_1get_1fees(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       LDKRoutingFees* ret = MALLOC(sizeof(LDKRoutingFees), "LDKRoutingFees");
-       *ret = RouteHint_get_fees(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKRoutingFees ret_var = RouteHint_get_fees(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHint_1set_1fees(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       LDKRoutingFees val_conv = *(LDKRoutingFees*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return RouteHint_set_fees(this_ptr_conv, val_conv);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKRoutingFees val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = RoutingFees_clone(&val_conv);
+       RouteHint_set_fees(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_RouteHint_1get_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       return RouteHint_get_cltv_expiry_delta(this_ptr_conv);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = RouteHint_get_cltv_expiry_delta(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHint_1set_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       return RouteHint_set_cltv_expiry_delta(this_ptr_conv, val);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHint_set_cltv_expiry_delta(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHint_1get_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       return RouteHint_get_htlc_minimum_msat(this_ptr_conv);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = RouteHint_get_htlc_minimum_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RouteHint_1set_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKRouteHint* this_ptr_conv = (LDKRouteHint*)this_ptr;
-       return RouteHint_set_htlc_minimum_msat(this_ptr_conv, val);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHint_1new(JNIEnv * _env, jclass _b, jlong src_node_id_arg, jlong short_channel_id_arg, jlong fees_arg, jshort cltv_expiry_delta_arg, jlong htlc_minimum_msat_arg) {
-       LDKPublicKey src_node_id_arg_conv = *(LDKPublicKey*)src_node_id_arg;
-       FREE((void*)src_node_id_arg);
-       LDKRoutingFees fees_arg_conv = *(LDKRoutingFees*)fees_arg;
-       FREE((void*)fees_arg);
-       fees_arg_conv.is_owned = true;
-       LDKRouteHint* ret = MALLOC(sizeof(LDKRouteHint), "LDKRouteHint");
-       *ret = RouteHint_new(src_node_id_arg_conv, short_channel_id_arg, fees_arg_conv, cltv_expiry_delta_arg, htlc_minimum_msat_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_get_1route(JNIEnv * _env, jclass _b, jlong our_node_id, jlong network, jlong target, jlong first_hops, jlong last_hops, jlong final_value_msat, jint final_cltv, jlong logger) {
-       LDKPublicKey our_node_id_conv = *(LDKPublicKey*)our_node_id;
-       FREE((void*)our_node_id);
-       LDKNetworkGraph* network_conv = (LDKNetworkGraph*)network;
-       LDKPublicKey target_conv = *(LDKPublicKey*)target;
-       FREE((void*)target);
-       LDKCVec_ChannelDetailsZ* first_hops_conv = (LDKCVec_ChannelDetailsZ*)first_hops;
-       LDKCVec_RouteHintZ last_hops_conv = *(LDKCVec_RouteHintZ*)last_hops;
-       FREE((void*)last_hops);
+       LDKRouteHint this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RouteHint_set_htlc_minimum_msat(&this_ptr_conv, val);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RouteHint_1new(JNIEnv * _env, jclass _b, jbyteArray src_node_id_arg, jlong short_channel_id_arg, jlong fees_arg, jshort cltv_expiry_delta_arg, jlong htlc_minimum_msat_arg) {
+       LDKPublicKey src_node_id_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, src_node_id_arg) == 33);
+       (*_env)->GetByteArrayRegion (_env, src_node_id_arg, 0, 33, src_node_id_arg_ref.compressed_form);
+       LDKRoutingFees fees_arg_conv;
+       fees_arg_conv.inner = (void*)(fees_arg & (~1));
+       fees_arg_conv.is_owned = (fees_arg & 1) || (fees_arg == 0);
+       if (fees_arg_conv.inner != NULL)
+               fees_arg_conv = RoutingFees_clone(&fees_arg_conv);
+       LDKRouteHint ret_var = RouteHint_new(src_node_id_arg_ref, short_channel_id_arg, fees_arg_conv, cltv_expiry_delta_arg, htlc_minimum_msat_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_get_1route(JNIEnv * _env, jclass _b, jbyteArray our_node_id, jlong network, jbyteArray target, jlongArray first_hops, jlongArray last_hops, jlong final_value_msat, jint final_cltv, jlong logger) {
+       LDKPublicKey our_node_id_ref;
+       CHECK((*_env)->GetArrayLength (_env, our_node_id) == 33);
+       (*_env)->GetByteArrayRegion (_env, our_node_id, 0, 33, our_node_id_ref.compressed_form);
+       LDKNetworkGraph network_conv;
+       network_conv.inner = (void*)(network & (~1));
+       network_conv.is_owned = (network & 1) || (network == 0);
+       LDKPublicKey target_ref;
+       CHECK((*_env)->GetArrayLength (_env, target) == 33);
+       (*_env)->GetByteArrayRegion (_env, target, 0, 33, target_ref.compressed_form);
+       LDKCVec_ChannelDetailsZ first_hops_constr;
+       first_hops_constr.datalen = (*_env)->GetArrayLength (_env, first_hops);
+       if (first_hops_constr.datalen > 0)
+               first_hops_constr.data = MALLOC(first_hops_constr.datalen * sizeof(LDKChannelDetails), "LDKCVec_ChannelDetailsZ Elements");
+       else
+               first_hops_constr.data = NULL;
+       long* first_hops_vals = (*_env)->GetLongArrayElements (_env, first_hops, NULL);
+       for (size_t q = 0; q < first_hops_constr.datalen; q++) {
+               long arr_conv_16 = first_hops_vals[q];
+               LDKChannelDetails arr_conv_16_conv;
+               arr_conv_16_conv.inner = (void*)(arr_conv_16 & (~1));
+               arr_conv_16_conv.is_owned = (arr_conv_16 & 1) || (arr_conv_16 == 0);
+               first_hops_constr.data[q] = arr_conv_16_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, first_hops, first_hops_vals, 0);
+       LDKCVec_RouteHintZ last_hops_constr;
+       last_hops_constr.datalen = (*_env)->GetArrayLength (_env, last_hops);
+       if (last_hops_constr.datalen > 0)
+               last_hops_constr.data = MALLOC(last_hops_constr.datalen * sizeof(LDKRouteHint), "LDKCVec_RouteHintZ Elements");
+       else
+               last_hops_constr.data = NULL;
+       long* last_hops_vals = (*_env)->GetLongArrayElements (_env, last_hops, NULL);
+       for (size_t l = 0; l < last_hops_constr.datalen; l++) {
+               long arr_conv_11 = last_hops_vals[l];
+               LDKRouteHint arr_conv_11_conv;
+               arr_conv_11_conv.inner = (void*)(arr_conv_11 & (~1));
+               arr_conv_11_conv.is_owned = (arr_conv_11 & 1) || (arr_conv_11 == 0);
+               if (arr_conv_11_conv.inner != NULL)
+                       arr_conv_11_conv = RouteHint_clone(&arr_conv_11_conv);
+               last_hops_constr.data[l] = arr_conv_11_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, last_hops, last_hops_vals, 0);
        LDKLogger logger_conv = *(LDKLogger*)logger;
        if (logger_conv.free == LDKLogger_JCalls_free) {
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(logger_conv.this_arg);
        }
-       LDKCResult_RouteLightningErrorZ* ret = MALLOC(sizeof(LDKCResult_RouteLightningErrorZ), "LDKCResult_RouteLightningErrorZ");
-       *ret = get_route(our_node_id_conv, network_conv, target_conv, first_hops_conv, last_hops_conv, final_value_msat, final_cltv, logger_conv);
-       return (long)ret;
+       LDKCResult_RouteLightningErrorZ* ret_conv = MALLOC(sizeof(LDKCResult_RouteLightningErrorZ), "LDKCResult_RouteLightningErrorZ");
+       *ret_conv = get_route(our_node_id_ref, &network_conv, target_ref, &first_hops_constr, last_hops_constr, final_value_msat, final_cltv, logger_conv);
+       FREE(first_hops_constr.data);
+       return (long)ret_conv;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NetworkGraph_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNetworkGraph this_ptr_conv = *(LDKNetworkGraph*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return NetworkGraph_free(this_ptr_conv);
+       LDKNetworkGraph this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       NetworkGraph_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_LockedNetworkGraph_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKLockedNetworkGraph this_ptr_conv = *(LDKLockedNetworkGraph*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return LockedNetworkGraph_free(this_ptr_conv);
+       LDKLockedNetworkGraph this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LockedNetworkGraph_free(this_ptr_conv);
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NetGraphMsgHandler_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNetGraphMsgHandler this_ptr_conv = *(LDKNetGraphMsgHandler*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return NetGraphMsgHandler_free(this_ptr_conv);
+       LDKNetGraphMsgHandler this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       NetGraphMsgHandler_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetGraphMsgHandler_1new(JNIEnv * _env, jclass _b, jlong chain_access, jlong logger) {
@@ -7018,11 +13755,14 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetGraphMsgHandler_1new(JNIEn
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(logger_conv.this_arg);
        }
-       LDKNetGraphMsgHandler* ret = MALLOC(sizeof(LDKNetGraphMsgHandler), "LDKNetGraphMsgHandler");
-       *ret = NetGraphMsgHandler_new(chain_access_conv, logger_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNetGraphMsgHandler ret_var = NetGraphMsgHandler_new(chain_access_conv, logger_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetGraphMsgHandler_1from_1net_1graph(JNIEnv * _env, jclass _b, jlong chain_access, jlong logger, jlong network_graph) {
@@ -7032,525 +13772,810 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetGraphMsgHandler_1from_1net
                // If this_arg is a JCalls struct, then we need to increment the refcnt in it.
                LDKLogger_JCalls_clone(logger_conv.this_arg);
        }
-       LDKNetworkGraph network_graph_conv = *(LDKNetworkGraph*)network_graph;
-       FREE((void*)network_graph);
-       network_graph_conv.is_owned = true;
-       LDKNetGraphMsgHandler* ret = MALLOC(sizeof(LDKNetGraphMsgHandler), "LDKNetGraphMsgHandler");
-       *ret = NetGraphMsgHandler_from_net_graph(chain_access_conv, logger_conv, network_graph_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNetworkGraph network_graph_conv;
+       network_graph_conv.inner = (void*)(network_graph & (~1));
+       network_graph_conv.is_owned = (network_graph & 1) || (network_graph == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKNetGraphMsgHandler ret_var = NetGraphMsgHandler_from_net_graph(chain_access_conv, logger_conv, network_graph_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetGraphMsgHandler_1read_1locked_1graph(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKNetGraphMsgHandler* this_arg_conv = (LDKNetGraphMsgHandler*)this_arg;
-       LDKLockedNetworkGraph* ret = MALLOC(sizeof(LDKLockedNetworkGraph), "LDKLockedNetworkGraph");
-       *ret = NetGraphMsgHandler_read_locked_graph(this_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNetGraphMsgHandler this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKLockedNetworkGraph ret_var = NetGraphMsgHandler_read_locked_graph(&this_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LockedNetworkGraph_1graph(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKLockedNetworkGraph* this_arg_conv = (LDKLockedNetworkGraph*)this_arg;
-       LDKNetworkGraph* ret = MALLOC(sizeof(LDKNetworkGraph), "LDKNetworkGraph");
-       *ret = LockedNetworkGraph_graph(this_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKLockedNetworkGraph this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       LDKNetworkGraph ret_var = LockedNetworkGraph_graph(&this_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetGraphMsgHandler_1as_1RoutingMessageHandler(JNIEnv * _env, jclass _b, jlong this_arg) {
-       LDKNetGraphMsgHandler* this_arg_conv = (LDKNetGraphMsgHandler*)this_arg;
+       LDKNetGraphMsgHandler this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
        LDKRoutingMessageHandler* ret = MALLOC(sizeof(LDKRoutingMessageHandler), "LDKRoutingMessageHandler");
-       *ret = NetGraphMsgHandler_as_RoutingMessageHandler(this_arg_conv);
+       *ret = NetGraphMsgHandler_as_RoutingMessageHandler(&this_arg_conv);
        return (long)ret;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDirectionalChannelInfo this_ptr_conv = *(LDKDirectionalChannelInfo*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return DirectionalChannelInfo_free(this_ptr_conv);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       DirectionalChannelInfo_free(this_ptr_conv);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1get_1last_1update(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_get_last_update(this_ptr_conv);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = DirectionalChannelInfo_get_last_update(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1set_1last_1update(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_set_last_update(this_ptr_conv, val);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       DirectionalChannelInfo_set_last_update(&this_ptr_conv, val);
 }
 
 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1get_1enabled(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_get_enabled(this_ptr_conv);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jboolean ret_val = DirectionalChannelInfo_get_enabled(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1set_1enabled(JNIEnv * _env, jclass _b, jlong this_ptr, jboolean val) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_set_enabled(this_ptr_conv, val);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       DirectionalChannelInfo_set_enabled(&this_ptr_conv, val);
 }
 
 JNIEXPORT jshort JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1get_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_get_cltv_expiry_delta(this_ptr_conv);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jshort ret_val = DirectionalChannelInfo_get_cltv_expiry_delta(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1set_1cltv_1expiry_1delta(JNIEnv * _env, jclass _b, jlong this_ptr, jshort val) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_set_cltv_expiry_delta(this_ptr_conv, val);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       DirectionalChannelInfo_set_cltv_expiry_delta(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1get_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_get_htlc_minimum_msat(this_ptr_conv);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jlong ret_val = DirectionalChannelInfo_get_htlc_minimum_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1set_1htlc_1minimum_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       return DirectionalChannelInfo_set_htlc_minimum_msat(this_ptr_conv, val);
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       DirectionalChannelInfo_set_htlc_minimum_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1get_1last_1update_1message(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       LDKChannelUpdate* ret = MALLOC(sizeof(LDKChannelUpdate), "LDKChannelUpdate");
-       *ret = DirectionalChannelInfo_get_last_update_message(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelUpdate ret_var = DirectionalChannelInfo_get_last_update_message(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1set_1last_1update_1message(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKDirectionalChannelInfo* this_ptr_conv = (LDKDirectionalChannelInfo*)this_ptr;
-       LDKChannelUpdate val_conv = *(LDKChannelUpdate*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return DirectionalChannelInfo_set_last_update_message(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKDirectionalChannelInfo* obj_conv = (LDKDirectionalChannelInfo*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = DirectionalChannelInfo_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKDirectionalChannelInfo* ret = MALLOC(sizeof(LDKDirectionalChannelInfo), "LDKDirectionalChannelInfo");
-       *ret = DirectionalChannelInfo_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKDirectionalChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelUpdate val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = ChannelUpdate_clone(&val_conv);
+       DirectionalChannelInfo_set_last_update_message(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKDirectionalChannelInfo obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = DirectionalChannelInfo_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_DirectionalChannelInfo_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKDirectionalChannelInfo ret_var = DirectionalChannelInfo_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelInfo this_ptr_conv = *(LDKChannelInfo*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return ChannelInfo_free(this_ptr_conv);
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       ChannelInfo_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1features(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKChannelFeatures* ret = MALLOC(sizeof(LDKChannelFeatures), "LDKChannelFeatures");
-       *ret = ChannelInfo_get_features(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelFeatures ret_var = ChannelInfo_get_features(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1features(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKChannelFeatures val_conv = *(LDKChannelFeatures*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelInfo_set_features(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1node_1one(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelInfo_get_node_one(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1node_1one(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelInfo_set_node_one(this_ptr_conv, val_conv);
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelFeatures val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       ChannelInfo_set_features(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1node_1one(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelInfo_get_node_one(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1node_1one(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelInfo_set_node_one(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1one_1to_1two(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKDirectionalChannelInfo* ret = MALLOC(sizeof(LDKDirectionalChannelInfo), "LDKDirectionalChannelInfo");
-       *ret = ChannelInfo_get_one_to_two(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKDirectionalChannelInfo ret_var = ChannelInfo_get_one_to_two(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1one_1to_1two(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKDirectionalChannelInfo val_conv = *(LDKDirectionalChannelInfo*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelInfo_set_one_to_two(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1node_1two(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKPublicKey* ret = MALLOC(sizeof(LDKPublicKey), "LDKPublicKey");
-       *ret = ChannelInfo_get_node_two(this_ptr_conv);
-       return (long)ret;
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1node_1two(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKPublicKey val_conv = *(LDKPublicKey*)val;
-       FREE((void*)val);
-       return ChannelInfo_set_node_two(this_ptr_conv, val_conv);
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKDirectionalChannelInfo val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       ChannelInfo_set_one_to_two(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1node_1two(JNIEnv * _env, jclass _b, jlong this_ptr) {
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, 33);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, 33, ChannelInfo_get_node_two(&this_ptr_conv).compressed_form);
+       return arg_arr;
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1node_1two(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKPublicKey val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 33);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 33, val_ref.compressed_form);
+       ChannelInfo_set_node_two(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1two_1to_1one(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKDirectionalChannelInfo* ret = MALLOC(sizeof(LDKDirectionalChannelInfo), "LDKDirectionalChannelInfo");
-       *ret = ChannelInfo_get_two_to_one(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKDirectionalChannelInfo ret_var = ChannelInfo_get_two_to_one(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1two_1to_1one(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKDirectionalChannelInfo val_conv = *(LDKDirectionalChannelInfo*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelInfo_set_two_to_one(this_ptr_conv, val_conv);
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKDirectionalChannelInfo val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       ChannelInfo_set_two_to_one(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1get_1announcement_1message(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKChannelAnnouncement* ret = MALLOC(sizeof(LDKChannelAnnouncement), "LDKChannelAnnouncement");
-       *ret = ChannelInfo_get_announcement_message(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelAnnouncement ret_var = ChannelInfo_get_announcement_message(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1set_1announcement_1message(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKChannelInfo* this_ptr_conv = (LDKChannelInfo*)this_ptr;
-       LDKChannelAnnouncement val_conv = *(LDKChannelAnnouncement*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return ChannelInfo_set_announcement_message(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKChannelInfo* obj_conv = (LDKChannelInfo*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = ChannelInfo_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKChannelInfo* ret = MALLOC(sizeof(LDKChannelInfo), "LDKChannelInfo");
-       *ret = ChannelInfo_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKChannelInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKChannelAnnouncement val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = ChannelAnnouncement_clone(&val_conv);
+       ChannelInfo_set_announcement_message(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKChannelInfo obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = ChannelInfo_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_ChannelInfo_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKChannelInfo ret_var = ChannelInfo_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RoutingFees_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRoutingFees this_ptr_conv = *(LDKRoutingFees*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return RoutingFees_free(this_ptr_conv);
+       LDKRoutingFees this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RoutingFees_free(this_ptr_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingFees_1clone(JNIEnv * _env, jclass _b, jlong orig) {
+       LDKRoutingFees orig_conv;
+       orig_conv.inner = (void*)(orig & (~1));
+       orig_conv.is_owned = (orig & 1) || (orig == 0);
+       LDKRoutingFees ret_var = RoutingFees_clone(&orig_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_RoutingFees_1get_1base_1msat(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRoutingFees* this_ptr_conv = (LDKRoutingFees*)this_ptr;
-       return RoutingFees_get_base_msat(this_ptr_conv);
+       LDKRoutingFees this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = RoutingFees_get_base_msat(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RoutingFees_1set_1base_1msat(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKRoutingFees* this_ptr_conv = (LDKRoutingFees*)this_ptr;
-       return RoutingFees_set_base_msat(this_ptr_conv, val);
+       LDKRoutingFees this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RoutingFees_set_base_msat(&this_ptr_conv, val);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_RoutingFees_1get_1proportional_1millionths(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKRoutingFees* this_ptr_conv = (LDKRoutingFees*)this_ptr;
-       return RoutingFees_get_proportional_millionths(this_ptr_conv);
+       LDKRoutingFees this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = RoutingFees_get_proportional_millionths(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_RoutingFees_1set_1proportional_1millionths(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKRoutingFees* this_ptr_conv = (LDKRoutingFees*)this_ptr;
-       return RoutingFees_set_proportional_millionths(this_ptr_conv, val);
+       LDKRoutingFees this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       RoutingFees_set_proportional_millionths(&this_ptr_conv, val);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingFees_1new(JNIEnv * _env, jclass _b, jint base_msat_arg, jint proportional_millionths_arg) {
-       LDKRoutingFees* ret = MALLOC(sizeof(LDKRoutingFees), "LDKRoutingFees");
-       *ret = RoutingFees_new(base_msat_arg, proportional_millionths_arg);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingFees_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKRoutingFees* ret = MALLOC(sizeof(LDKRoutingFees), "LDKRoutingFees");
-       *ret = RoutingFees_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKRoutingFees ret_var = RoutingFees_new(base_msat_arg, proportional_millionths_arg);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingFees_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKRoutingFees ret_var = RoutingFees_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_RoutingFees_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKRoutingFees* obj_conv = (LDKRoutingFees*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = RoutingFees_write(obj_conv);
-       return (long)ret;
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_RoutingFees_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKRoutingFees obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = RoutingFees_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncementInfo this_ptr_conv = *(LDKNodeAnnouncementInfo*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return NodeAnnouncementInfo_free(this_ptr_conv);
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       NodeAnnouncementInfo_free(this_ptr_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1get_1features(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       LDKNodeFeatures* ret = MALLOC(sizeof(LDKNodeFeatures), "LDKNodeFeatures");
-       *ret = NodeAnnouncementInfo_get_features(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeFeatures ret_var = NodeAnnouncementInfo_get_features(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1features(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       LDKNodeFeatures val_conv = *(LDKNodeFeatures*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return NodeAnnouncementInfo_set_features(this_ptr_conv, val_conv);
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeFeatures val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       NodeAnnouncementInfo_set_features(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jint JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1get_1last_1update(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       return NodeAnnouncementInfo_get_last_update(this_ptr_conv);
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       jint ret_val = NodeAnnouncementInfo_get_last_update(&this_ptr_conv);
+       return ret_val;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1last_1update(JNIEnv * _env, jclass _b, jlong this_ptr, jint val) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       return NodeAnnouncementInfo_set_last_update(this_ptr_conv, val);
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       NodeAnnouncementInfo_set_last_update(&this_ptr_conv, val);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1get_1rgb(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 3);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 3, *NodeAnnouncementInfo_get_rgb(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 3, *NodeAnnouncementInfo_get_rgb(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1rgb(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       LDKThreeBytes val_conv = *(LDKThreeBytes*)val;
-       FREE((void*)val);
-       return NodeAnnouncementInfo_set_rgb(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1rgb(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThreeBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 3);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 3, val_ref.data);
+       NodeAnnouncementInfo_set_rgb(&this_ptr_conv, val_ref);
 }
 
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1get_1alias(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
        jbyteArray ret_arr = (*_env)->NewByteArray(_env, 32);
-       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *NodeAnnouncementInfo_get_alias(this_ptr_conv));
+       (*_env)->SetByteArrayRegion(_env, ret_arr, 0, 32, *NodeAnnouncementInfo_get_alias(&this_ptr_conv));
        return ret_arr;
 }
 
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1alias(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       LDKThirtyTwoBytes val_conv = *(LDKThirtyTwoBytes*)val;
-       FREE((void*)val);
-       return NodeAnnouncementInfo_set_alias(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1addresses(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       LDKCVec_NetAddressZ val_conv = *(LDKCVec_NetAddressZ*)val;
-       FREE((void*)val);
-       return NodeAnnouncementInfo_set_addresses(this_ptr_conv, val_conv);
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1alias(JNIEnv * _env, jclass _b, jlong this_ptr, jbyteArray val) {
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKThirtyTwoBytes val_ref;
+       CHECK((*_env)->GetArrayLength (_env, val) == 32);
+       (*_env)->GetByteArrayRegion (_env, val, 0, 32, val_ref.data);
+       NodeAnnouncementInfo_set_alias(&this_ptr_conv, val_ref);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1addresses(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_NetAddressZ val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(LDKNetAddress), "LDKCVec_NetAddressZ Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t m = 0; m < val_constr.datalen; m++) {
+               long arr_conv_12 = val_vals[m];
+               LDKNetAddress arr_conv_12_conv = *(LDKNetAddress*)arr_conv_12;
+               FREE((void*)arr_conv_12);
+               val_constr.data[m] = arr_conv_12_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       NodeAnnouncementInfo_set_addresses(&this_ptr_conv, val_constr);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1get_1announcement_1message(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       LDKNodeAnnouncement* ret = MALLOC(sizeof(LDKNodeAnnouncement), "LDKNodeAnnouncement");
-       *ret = NodeAnnouncementInfo_get_announcement_message(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeAnnouncement ret_var = NodeAnnouncementInfo_get_announcement_message(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1set_1announcement_1message(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeAnnouncementInfo* this_ptr_conv = (LDKNodeAnnouncementInfo*)this_ptr;
-       LDKNodeAnnouncement val_conv = *(LDKNodeAnnouncement*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return NodeAnnouncementInfo_set_announcement_message(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1new(JNIEnv * _env, jclass _b, jlong features_arg, jint last_update_arg, jlong rgb_arg, jlong alias_arg, jlong addresses_arg, jlong announcement_message_arg) {
-       LDKNodeFeatures features_arg_conv = *(LDKNodeFeatures*)features_arg;
-       FREE((void*)features_arg);
-       features_arg_conv.is_owned = true;
-       LDKThreeBytes rgb_arg_conv = *(LDKThreeBytes*)rgb_arg;
-       FREE((void*)rgb_arg);
-       LDKThirtyTwoBytes alias_arg_conv = *(LDKThirtyTwoBytes*)alias_arg;
-       FREE((void*)alias_arg);
-       LDKCVec_NetAddressZ addresses_arg_conv = *(LDKCVec_NetAddressZ*)addresses_arg;
-       FREE((void*)addresses_arg);
-       LDKNodeAnnouncement announcement_message_arg_conv = *(LDKNodeAnnouncement*)announcement_message_arg;
-       FREE((void*)announcement_message_arg);
-       announcement_message_arg_conv.is_owned = true;
-       LDKNodeAnnouncementInfo* ret = MALLOC(sizeof(LDKNodeAnnouncementInfo), "LDKNodeAnnouncementInfo");
-       *ret = NodeAnnouncementInfo_new(features_arg_conv, last_update_arg, rgb_arg_conv, alias_arg_conv, addresses_arg_conv, announcement_message_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKNodeAnnouncementInfo* obj_conv = (LDKNodeAnnouncementInfo*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = NodeAnnouncementInfo_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKNodeAnnouncementInfo* ret = MALLOC(sizeof(LDKNodeAnnouncementInfo), "LDKNodeAnnouncementInfo");
-       *ret = NodeAnnouncementInfo_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeAnnouncementInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeAnnouncement val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = NodeAnnouncement_clone(&val_conv);
+       NodeAnnouncementInfo_set_announcement_message(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1new(JNIEnv * _env, jclass _b, jlong features_arg, jint last_update_arg, jbyteArray rgb_arg, jbyteArray alias_arg, jlongArray addresses_arg, jlong announcement_message_arg) {
+       LDKNodeFeatures features_arg_conv;
+       features_arg_conv.inner = (void*)(features_arg & (~1));
+       features_arg_conv.is_owned = (features_arg & 1) || (features_arg == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKThreeBytes rgb_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, rgb_arg) == 3);
+       (*_env)->GetByteArrayRegion (_env, rgb_arg, 0, 3, rgb_arg_ref.data);
+       LDKThirtyTwoBytes alias_arg_ref;
+       CHECK((*_env)->GetArrayLength (_env, alias_arg) == 32);
+       (*_env)->GetByteArrayRegion (_env, alias_arg, 0, 32, alias_arg_ref.data);
+       LDKCVec_NetAddressZ addresses_arg_constr;
+       addresses_arg_constr.datalen = (*_env)->GetArrayLength (_env, addresses_arg);
+       if (addresses_arg_constr.datalen > 0)
+               addresses_arg_constr.data = MALLOC(addresses_arg_constr.datalen * sizeof(LDKNetAddress), "LDKCVec_NetAddressZ Elements");
+       else
+               addresses_arg_constr.data = NULL;
+       long* addresses_arg_vals = (*_env)->GetLongArrayElements (_env, addresses_arg, NULL);
+       for (size_t m = 0; m < addresses_arg_constr.datalen; m++) {
+               long arr_conv_12 = addresses_arg_vals[m];
+               LDKNetAddress arr_conv_12_conv = *(LDKNetAddress*)arr_conv_12;
+               FREE((void*)arr_conv_12);
+               addresses_arg_constr.data[m] = arr_conv_12_conv;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, addresses_arg, addresses_arg_vals, 0);
+       LDKNodeAnnouncement announcement_message_arg_conv;
+       announcement_message_arg_conv.inner = (void*)(announcement_message_arg & (~1));
+       announcement_message_arg_conv.is_owned = (announcement_message_arg & 1) || (announcement_message_arg == 0);
+       if (announcement_message_arg_conv.inner != NULL)
+               announcement_message_arg_conv = NodeAnnouncement_clone(&announcement_message_arg_conv);
+       LDKNodeAnnouncementInfo ret_var = NodeAnnouncementInfo_new(features_arg_conv, last_update_arg, rgb_arg_ref, alias_arg_ref, addresses_arg_constr, announcement_message_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKNodeAnnouncementInfo obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = NodeAnnouncementInfo_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeAnnouncementInfo_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKNodeAnnouncementInfo ret_var = NodeAnnouncementInfo_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeInfo_1free(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeInfo this_ptr_conv = *(LDKNodeInfo*)this_ptr;
-       FREE((void*)this_ptr);
-       this_ptr_conv.is_owned = true;
-       return NodeInfo_free(this_ptr_conv);
-}
-
-JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeInfo_1set_1channels(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeInfo* this_ptr_conv = (LDKNodeInfo*)this_ptr;
-       LDKCVec_u64Z val_conv = *(LDKCVec_u64Z*)val;
-       FREE((void*)val);
-       return NodeInfo_set_channels(this_ptr_conv, val_conv);
+       LDKNodeInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       NodeInfo_free(this_ptr_conv);
+}
+
+JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeInfo_1set_1channels(JNIEnv * _env, jclass _b, jlong this_ptr, jlongArray val) {
+       LDKNodeInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKCVec_u64Z val_constr;
+       val_constr.datalen = (*_env)->GetArrayLength (_env, val);
+       if (val_constr.datalen > 0)
+               val_constr.data = MALLOC(val_constr.datalen * sizeof(jlong), "LDKCVec_u64Z Elements");
+       else
+               val_constr.data = NULL;
+       long* val_vals = (*_env)->GetLongArrayElements (_env, val, NULL);
+       for (size_t g = 0; g < val_constr.datalen; g++) {
+               long arr_conv_6 = val_vals[g];
+               val_constr.data[g] = arr_conv_6;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, val, val_vals, 0);
+       NodeInfo_set_channels(&this_ptr_conv, val_constr);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeInfo_1get_1lowest_1inbound_1channel_1fees(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeInfo* this_ptr_conv = (LDKNodeInfo*)this_ptr;
-       LDKRoutingFees* ret = MALLOC(sizeof(LDKRoutingFees), "LDKRoutingFees");
-       *ret = NodeInfo_get_lowest_inbound_channel_fees(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKRoutingFees ret_var = NodeInfo_get_lowest_inbound_channel_fees(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeInfo_1set_1lowest_1inbound_1channel_1fees(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeInfo* this_ptr_conv = (LDKNodeInfo*)this_ptr;
-       LDKRoutingFees val_conv = *(LDKRoutingFees*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return NodeInfo_set_lowest_inbound_channel_fees(this_ptr_conv, val_conv);
+       LDKNodeInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKRoutingFees val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       if (val_conv.inner != NULL)
+               val_conv = RoutingFees_clone(&val_conv);
+       NodeInfo_set_lowest_inbound_channel_fees(&this_ptr_conv, val_conv);
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeInfo_1get_1announcement_1info(JNIEnv * _env, jclass _b, jlong this_ptr) {
-       LDKNodeInfo* this_ptr_conv = (LDKNodeInfo*)this_ptr;
-       LDKNodeAnnouncementInfo* ret = MALLOC(sizeof(LDKNodeAnnouncementInfo), "LDKNodeAnnouncementInfo");
-       *ret = NodeInfo_get_announcement_info(this_ptr_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeAnnouncementInfo ret_var = NodeInfo_get_announcement_info(&this_ptr_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NodeInfo_1set_1announcement_1info(JNIEnv * _env, jclass _b, jlong this_ptr, jlong val) {
-       LDKNodeInfo* this_ptr_conv = (LDKNodeInfo*)this_ptr;
-       LDKNodeAnnouncementInfo val_conv = *(LDKNodeAnnouncementInfo*)val;
-       FREE((void*)val);
-       val_conv.is_owned = true;
-       return NodeInfo_set_announcement_info(this_ptr_conv, val_conv);
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeInfo_1new(JNIEnv * _env, jclass _b, jlong channels_arg, jlong lowest_inbound_channel_fees_arg, jlong announcement_info_arg) {
-       LDKCVec_u64Z channels_arg_conv = *(LDKCVec_u64Z*)channels_arg;
-       FREE((void*)channels_arg);
-       LDKRoutingFees lowest_inbound_channel_fees_arg_conv = *(LDKRoutingFees*)lowest_inbound_channel_fees_arg;
-       FREE((void*)lowest_inbound_channel_fees_arg);
-       lowest_inbound_channel_fees_arg_conv.is_owned = true;
-       LDKNodeAnnouncementInfo announcement_info_arg_conv = *(LDKNodeAnnouncementInfo*)announcement_info_arg;
-       FREE((void*)announcement_info_arg);
-       announcement_info_arg_conv.is_owned = true;
-       LDKNodeInfo* ret = MALLOC(sizeof(LDKNodeInfo), "LDKNodeInfo");
-       *ret = NodeInfo_new(channels_arg_conv, lowest_inbound_channel_fees_arg_conv, announcement_info_arg_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKNodeInfo* obj_conv = (LDKNodeInfo*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = NodeInfo_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeInfo_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKNodeInfo* ret = MALLOC(sizeof(LDKNodeInfo), "LDKNodeInfo");
-       *ret = NodeInfo_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetworkGraph_1write(JNIEnv * _env, jclass _b, jlong obj) {
-       LDKNetworkGraph* obj_conv = (LDKNetworkGraph*)obj;
-       LDKCVec_u8Z* ret = MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8Z");
-       *ret = NetworkGraph_write(obj_conv);
-       return (long)ret;
-}
-
-JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetworkGraph_1read(JNIEnv * _env, jclass _b, jlong ser) {
-       LDKu8slice ser_conv = *(LDKu8slice*)ser;
-       FREE((void*)ser);
-       LDKNetworkGraph* ret = MALLOC(sizeof(LDKNetworkGraph), "LDKNetworkGraph");
-       *ret = NetworkGraph_read(ser_conv);
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNodeInfo this_ptr_conv;
+       this_ptr_conv.inner = (void*)(this_ptr & (~1));
+       this_ptr_conv.is_owned = (this_ptr & 1) || (this_ptr == 0);
+       LDKNodeAnnouncementInfo val_conv;
+       val_conv.inner = (void*)(val & (~1));
+       val_conv.is_owned = (val & 1) || (val == 0);
+       // Warning: we may need a move here but can't clone!
+       NodeInfo_set_announcement_info(&this_ptr_conv, val_conv);
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeInfo_1new(JNIEnv * _env, jclass _b, jlongArray channels_arg, jlong lowest_inbound_channel_fees_arg, jlong announcement_info_arg) {
+       LDKCVec_u64Z channels_arg_constr;
+       channels_arg_constr.datalen = (*_env)->GetArrayLength (_env, channels_arg);
+       if (channels_arg_constr.datalen > 0)
+               channels_arg_constr.data = MALLOC(channels_arg_constr.datalen * sizeof(jlong), "LDKCVec_u64Z Elements");
+       else
+               channels_arg_constr.data = NULL;
+       long* channels_arg_vals = (*_env)->GetLongArrayElements (_env, channels_arg, NULL);
+       for (size_t g = 0; g < channels_arg_constr.datalen; g++) {
+               long arr_conv_6 = channels_arg_vals[g];
+               channels_arg_constr.data[g] = arr_conv_6;
+       }
+       (*_env)->ReleaseLongArrayElements (_env, channels_arg, channels_arg_vals, 0);
+       LDKRoutingFees lowest_inbound_channel_fees_arg_conv;
+       lowest_inbound_channel_fees_arg_conv.inner = (void*)(lowest_inbound_channel_fees_arg & (~1));
+       lowest_inbound_channel_fees_arg_conv.is_owned = (lowest_inbound_channel_fees_arg & 1) || (lowest_inbound_channel_fees_arg == 0);
+       if (lowest_inbound_channel_fees_arg_conv.inner != NULL)
+               lowest_inbound_channel_fees_arg_conv = RoutingFees_clone(&lowest_inbound_channel_fees_arg_conv);
+       LDKNodeAnnouncementInfo announcement_info_arg_conv;
+       announcement_info_arg_conv.inner = (void*)(announcement_info_arg & (~1));
+       announcement_info_arg_conv.is_owned = (announcement_info_arg & 1) || (announcement_info_arg == 0);
+       // Warning: we may need a move here but can't clone!
+       LDKNodeInfo ret_var = NodeInfo_new(channels_arg_constr, lowest_inbound_channel_fees_arg_conv, announcement_info_arg_conv);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_NodeInfo_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKNodeInfo obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = NodeInfo_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NodeInfo_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKNodeInfo ret_var = NodeInfo_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
+}
+
+JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_NetworkGraph_1write(JNIEnv * _env, jclass _b, jlong obj) {
+       LDKNetworkGraph obj_conv;
+       obj_conv.inner = (void*)(obj & (~1));
+       obj_conv.is_owned = (obj & 1) || (obj == 0);
+       LDKCVec_u8Z arg_var = NetworkGraph_write(&obj_conv);
+       jbyteArray arg_arr = (*_env)->NewByteArray(_env, arg_var.datalen);
+       (*_env)->SetByteArrayRegion(_env, arg_arr, 0, arg_var.datalen, arg_var.data);
+       CVec_u8Z_free(arg_var);
+       return arg_arr;
+}
+
+JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetworkGraph_1read(JNIEnv * _env, jclass _b, jbyteArray ser) {
+       LDKu8slice ser_ref;
+       ser_ref.data = (*_env)->GetByteArrayElements (_env, ser, NULL);
+       ser_ref.datalen = (*_env)->GetArrayLength (_env, ser);
+       LDKNetworkGraph ret_var = NetworkGraph_read(ser_ref);
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       (*_env)->ReleaseByteArrayElements(_env, ser, (int8_t*)ser_ref.data, 0);
+       return ret_ref;
 }
 
 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_NetworkGraph_1new(JNIEnv * _env, jclass _b) {
-       LDKNetworkGraph* ret = MALLOC(sizeof(LDKNetworkGraph), "LDKNetworkGraph");
-       *ret = NetworkGraph_new();
-       assert(ret->is_owned);
-       ret->is_owned = false;
-       return (long)ret;
+       LDKNetworkGraph ret_var = NetworkGraph_new();
+       CHECK((((long)ret_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.
+       CHECK((((long)&ret_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.
+       long ret_ref = (long)ret_var.inner;
+       if (ret_var.is_owned) {
+               ret_ref |= 1;
+       }
+       return ret_ref;
 }
 
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_NetworkGraph_1close_1channel_1from_1update(JNIEnv * _env, jclass _b, jlong this_arg, jlong short_channel_id, jboolean is_permanent) {
-       LDKNetworkGraph* this_arg_conv = (LDKNetworkGraph*)this_arg;
-       return NetworkGraph_close_channel_from_update(this_arg_conv, short_channel_id, is_permanent);
+       LDKNetworkGraph this_arg_conv;
+       this_arg_conv.inner = (void*)(this_arg & (~1));
+       this_arg_conv.is_owned = (this_arg & 1) || (this_arg == 0);
+       NetworkGraph_close_channel_from_update(&this_arg_conv, short_channel_id, is_permanent);
 }