[ldk-java] / src / main / java / org / ldk / structs / Event.java

package org.ldk.structs;

import org.ldk.impl.bindings;
import org.ldk.enums.*;
import org.ldk.util.*;
import java.util.Arrays;
import java.lang.ref.Reference;
import javax.annotation.Nullable;


/**
 * An Event which you should probably take some action in response to.
 * 
 * Note that while Writeable and Readable are implemented for Event, you probably shouldn't use
 * them directly as they don't round-trip exactly (for example FundingGenerationReady is never
 * written as it makes no sense to respond to it after reconnecting to peers).
 */
@SuppressWarnings("unchecked") // We correctly assign various generic arrays
public class Event extends CommonBase {
        private Event(Object _dummy, long ptr) { super(ptr); }
        @Override @SuppressWarnings("deprecation")
        protected void finalize() throws Throwable {
                super.finalize();
                if (ptr != 0) { bindings.Event_free(ptr); }
        }
        static Event constr_from_ptr(long ptr) {
                bindings.LDKEvent raw_val = bindings.LDKEvent_ref_from_ptr(ptr);
                if (raw_val.getClass() == bindings.LDKEvent.FundingGenerationReady.class) {
                        return new FundingGenerationReady(ptr, (bindings.LDKEvent.FundingGenerationReady)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PaymentClaimable.class) {
                        return new PaymentClaimable(ptr, (bindings.LDKEvent.PaymentClaimable)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PaymentClaimed.class) {
                        return new PaymentClaimed(ptr, (bindings.LDKEvent.PaymentClaimed)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.InvoiceRequestFailed.class) {
                        return new InvoiceRequestFailed(ptr, (bindings.LDKEvent.InvoiceRequestFailed)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PaymentSent.class) {
                        return new PaymentSent(ptr, (bindings.LDKEvent.PaymentSent)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PaymentFailed.class) {
                        return new PaymentFailed(ptr, (bindings.LDKEvent.PaymentFailed)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PaymentPathSuccessful.class) {
                        return new PaymentPathSuccessful(ptr, (bindings.LDKEvent.PaymentPathSuccessful)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PaymentPathFailed.class) {
                        return new PaymentPathFailed(ptr, (bindings.LDKEvent.PaymentPathFailed)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.ProbeSuccessful.class) {
                        return new ProbeSuccessful(ptr, (bindings.LDKEvent.ProbeSuccessful)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.ProbeFailed.class) {
                        return new ProbeFailed(ptr, (bindings.LDKEvent.ProbeFailed)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PendingHTLCsForwardable.class) {
                        return new PendingHTLCsForwardable(ptr, (bindings.LDKEvent.PendingHTLCsForwardable)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.HTLCIntercepted.class) {
                        return new HTLCIntercepted(ptr, (bindings.LDKEvent.HTLCIntercepted)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.SpendableOutputs.class) {
                        return new SpendableOutputs(ptr, (bindings.LDKEvent.SpendableOutputs)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.PaymentForwarded.class) {
                        return new PaymentForwarded(ptr, (bindings.LDKEvent.PaymentForwarded)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.ChannelPending.class) {
                        return new ChannelPending(ptr, (bindings.LDKEvent.ChannelPending)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.ChannelReady.class) {
                        return new ChannelReady(ptr, (bindings.LDKEvent.ChannelReady)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.ChannelClosed.class) {
                        return new ChannelClosed(ptr, (bindings.LDKEvent.ChannelClosed)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.DiscardFunding.class) {
                        return new DiscardFunding(ptr, (bindings.LDKEvent.DiscardFunding)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.OpenChannelRequest.class) {
                        return new OpenChannelRequest(ptr, (bindings.LDKEvent.OpenChannelRequest)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.HTLCHandlingFailed.class) {
                        return new HTLCHandlingFailed(ptr, (bindings.LDKEvent.HTLCHandlingFailed)raw_val);
                }
                if (raw_val.getClass() == bindings.LDKEvent.BumpTransaction.class) {
                        return new BumpTransaction(ptr, (bindings.LDKEvent.BumpTransaction)raw_val);
                }
                assert false; return null; // Unreachable without extending the (internal) bindings interface
        }

        /**
         * Used to indicate that the client should generate a funding transaction with the given
         * parameters and then call [`ChannelManager::funding_transaction_generated`].
         * Generated in [`ChannelManager`] message handling.
         * Note that *all inputs* in the funding transaction must spend SegWit outputs or your
         * counterparty can steal your funds!
         * 
         * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
         * [`ChannelManager::funding_transaction_generated`]: crate::ln::channelmanager::ChannelManager::funding_transaction_generated
         */
        public final static class FundingGenerationReady extends Event {
                /**
                 * The random channel_id we picked which you'll need to pass into
                 * [`ChannelManager::funding_transaction_generated`].
                 * 
                 * [`ChannelManager::funding_transaction_generated`]: crate::ln::channelmanager::ChannelManager::funding_transaction_generated
                */
                public final byte[] temporary_channel_id;
                /**
                 * The counterparty's node_id, which you'll need to pass back into
                 * [`ChannelManager::funding_transaction_generated`].
                 * 
                 * [`ChannelManager::funding_transaction_generated`]: crate::ln::channelmanager::ChannelManager::funding_transaction_generated
                */
                public final byte[] counterparty_node_id;
                /**
                 * The value, in satoshis, that the output should have.
                */
                public final long channel_value_satoshis;
                /**
                 * The script which should be used in the transaction output.
                */
                public final byte[] output_script;
                /**
                 * The `user_channel_id` value passed in to [`ChannelManager::create_channel`] for outbound
                 * channels, or to [`ChannelManager::accept_inbound_channel`] for inbound channels if
                 * [`UserConfig::manually_accept_inbound_channels`] config flag is set to true. Otherwise
                 * `user_channel_id` will be randomized for an inbound channel.  This may be zero for objects
                 * serialized with LDK versions prior to 0.0.113.
                 * 
                 * [`ChannelManager::create_channel`]: crate::ln::channelmanager::ChannelManager::create_channel
                 * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
                 * [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels
                */
                public final org.ldk.util.UInt128 user_channel_id;
                private FundingGenerationReady(long ptr, bindings.LDKEvent.FundingGenerationReady obj) {
                        super(null, ptr);
                        this.temporary_channel_id = obj.temporary_channel_id;
                        this.counterparty_node_id = obj.counterparty_node_id;
                        this.channel_value_satoshis = obj.channel_value_satoshis;
                        this.output_script = obj.output_script;
                        byte[] user_channel_id = obj.user_channel_id;
                        org.ldk.util.UInt128 user_channel_id_conv = new org.ldk.util.UInt128(user_channel_id);
                        this.user_channel_id = user_channel_id_conv;
                }
        }
        /**
         * Indicates that we've been offered a payment and it needs to be claimed via calling
         * [`ChannelManager::claim_funds`] with the preimage given in [`PaymentPurpose`].
         * 
         * Note that if the preimage is not known, you should call
         * [`ChannelManager::fail_htlc_backwards`] or [`ChannelManager::fail_htlc_backwards_with_reason`]
         * to free up resources for this HTLC and avoid network congestion.
         * 
         * If [`Event::PaymentClaimable::onion_fields`] is `Some`, and includes custom TLVs with even type
         * numbers, you should use [`ChannelManager::fail_htlc_backwards_with_reason`] with
         * [`FailureCode::InvalidOnionPayload`] if you fail to understand and handle the contents, or
         * [`ChannelManager::claim_funds_with_known_custom_tlvs`] upon successful handling.
         * If you don't intend to check for custom TLVs, you can simply use
         * [`ChannelManager::claim_funds`], which will automatically fail back even custom TLVs.
         * 
         * If you fail to call [`ChannelManager::claim_funds`],
         * [`ChannelManager::claim_funds_with_known_custom_tlvs`],
         * [`ChannelManager::fail_htlc_backwards`], or
         * [`ChannelManager::fail_htlc_backwards_with_reason`] within the HTLC's timeout, the HTLC will
         * be automatically failed.
         * 
         * # Note
         * LDK will not stop an inbound payment from being paid multiple times, so multiple
         * `PaymentClaimable` events may be generated for the same payment. In such a case it is
         * polite (and required in the lightning specification) to fail the payment the second time
         * and give the sender their money back rather than accepting double payment.
         * 
         * # Note
         * This event used to be called `PaymentReceived` in LDK versions 0.0.112 and earlier.
         * 
         * [`ChannelManager::claim_funds`]: crate::ln::channelmanager::ChannelManager::claim_funds
         * [`ChannelManager::claim_funds_with_known_custom_tlvs`]: crate::ln::channelmanager::ChannelManager::claim_funds_with_known_custom_tlvs
         * [`FailureCode::InvalidOnionPayload`]: crate::ln::channelmanager::FailureCode::InvalidOnionPayload
         * [`ChannelManager::fail_htlc_backwards`]: crate::ln::channelmanager::ChannelManager::fail_htlc_backwards
         * [`ChannelManager::fail_htlc_backwards_with_reason`]: crate::ln::channelmanager::ChannelManager::fail_htlc_backwards_with_reason
         */
        public final static class PaymentClaimable extends Event {
                /**
                 * The node that will receive the payment after it has been claimed.
                 * This is useful to identify payments received via [phantom nodes].
                 * This field will always be filled in when the event was generated by LDK versions
                 * 0.0.113 and above.
                 * 
                 * [phantom nodes]: crate::sign::PhantomKeysManager
                 * 
                 * Note that this (or a relevant inner pointer) may be NULL or all-0s to represent None
                */
                @Nullable public final byte[] receiver_node_id;
                /**
                 * The hash for which the preimage should be handed to the ChannelManager. Note that LDK will
                 * not stop you from registering duplicate payment hashes for inbound payments.
                */
                public final byte[] payment_hash;
                /**
                 * The fields in the onion which were received with each HTLC. Only fields which were
                 * identical in each HTLC involved in the payment will be included here.
                 * 
                 * Payments received on LDK versions prior to 0.0.115 will have this field unset.
                 * 
                 * Note that this (or a relevant inner pointer) may be NULL or all-0s to represent None
                */
                @Nullable public final org.ldk.structs.RecipientOnionFields onion_fields;
                /**
                 * The value, in thousandths of a satoshi, that this payment is claimable for. May be greater
                 * than the invoice amount.
                 * 
                 * May be less than the invoice amount if [`ChannelConfig::accept_underpaying_htlcs`] is set
                 * and the previous hop took an extra fee.
                 * 
                 * # Note
                 * If [`ChannelConfig::accept_underpaying_htlcs`] is set and you claim without verifying this
                 * field, you may lose money!
                 * 
                 * [`ChannelConfig::accept_underpaying_htlcs`]: crate::util::config::ChannelConfig::accept_underpaying_htlcs
                */
                public final long amount_msat;
                /**
                 * The value, in thousands of a satoshi, that was skimmed off of this payment as an extra fee
                 * taken by our channel counterparty.
                 * 
                 * Will always be 0 unless [`ChannelConfig::accept_underpaying_htlcs`] is set.
                 * 
                 * [`ChannelConfig::accept_underpaying_htlcs`]: crate::util::config::ChannelConfig::accept_underpaying_htlcs
                */
                public final long counterparty_skimmed_fee_msat;
                /**
                 * Information for claiming this received payment, based on whether the purpose of the
                 * payment is to pay an invoice or to send a spontaneous payment.
                */
                public final org.ldk.structs.PaymentPurpose purpose;
                /**
                 * The `channel_id` indicating over which channel we received the payment.
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ via_channel_id;
                /**
                 * The `user_channel_id` indicating over which channel we received the payment.
                */
                public final org.ldk.structs.Option_U128Z via_user_channel_id;
                /**
                 * The block height at which this payment will be failed back and will no longer be
                 * eligible for claiming.
                 * 
                 * Prior to this height, a call to [`ChannelManager::claim_funds`] is guaranteed to
                 * succeed, however you should wait for [`Event::PaymentClaimed`] to be sure.
                 * 
                 * [`ChannelManager::claim_funds`]: crate::ln::channelmanager::ChannelManager::claim_funds
                */
                public final org.ldk.structs.Option_u32Z claim_deadline;
                private PaymentClaimable(long ptr, bindings.LDKEvent.PaymentClaimable obj) {
                        super(null, ptr);
                        this.receiver_node_id = obj.receiver_node_id;
                        this.payment_hash = obj.payment_hash;
                        long onion_fields = obj.onion_fields;
                        org.ldk.structs.RecipientOnionFields onion_fields_hu_conv = null; if (onion_fields < 0 || onion_fields > 4096) { onion_fields_hu_conv = new org.ldk.structs.RecipientOnionFields(null, onion_fields); }
                        if (onion_fields_hu_conv != null) { onion_fields_hu_conv.ptrs_to.add(this); };
                        this.onion_fields = onion_fields_hu_conv;
                        this.amount_msat = obj.amount_msat;
                        this.counterparty_skimmed_fee_msat = obj.counterparty_skimmed_fee_msat;
                        long purpose = obj.purpose;
                        org.ldk.structs.PaymentPurpose purpose_hu_conv = org.ldk.structs.PaymentPurpose.constr_from_ptr(purpose);
                        if (purpose_hu_conv != null) { purpose_hu_conv.ptrs_to.add(this); };
                        this.purpose = purpose_hu_conv;
                        long via_channel_id = obj.via_channel_id;
                        org.ldk.structs.Option_ThirtyTwoBytesZ via_channel_id_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(via_channel_id);
                        if (via_channel_id_hu_conv != null) { via_channel_id_hu_conv.ptrs_to.add(this); };
                        this.via_channel_id = via_channel_id_hu_conv;
                        long via_user_channel_id = obj.via_user_channel_id;
                        org.ldk.structs.Option_U128Z via_user_channel_id_hu_conv = org.ldk.structs.Option_U128Z.constr_from_ptr(via_user_channel_id);
                        if (via_user_channel_id_hu_conv != null) { via_user_channel_id_hu_conv.ptrs_to.add(this); };
                        this.via_user_channel_id = via_user_channel_id_hu_conv;
                        long claim_deadline = obj.claim_deadline;
                        org.ldk.structs.Option_u32Z claim_deadline_hu_conv = org.ldk.structs.Option_u32Z.constr_from_ptr(claim_deadline);
                        if (claim_deadline_hu_conv != null) { claim_deadline_hu_conv.ptrs_to.add(this); };
                        this.claim_deadline = claim_deadline_hu_conv;
                }
        }
        /**
         * Indicates a payment has been claimed and we've received money!
         * 
         * This most likely occurs when [`ChannelManager::claim_funds`] has been called in response
         * to an [`Event::PaymentClaimable`]. However, if we previously crashed during a
         * [`ChannelManager::claim_funds`] call you may see this event without a corresponding
         * [`Event::PaymentClaimable`] event.
         * 
         * # Note
         * LDK will not stop an inbound payment from being paid multiple times, so multiple
         * `PaymentClaimable` events may be generated for the same payment. If you then call
         * [`ChannelManager::claim_funds`] twice for the same [`Event::PaymentClaimable`] you may get
         * multiple `PaymentClaimed` events.
         * 
         * [`ChannelManager::claim_funds`]: crate::ln::channelmanager::ChannelManager::claim_funds
         */
        public final static class PaymentClaimed extends Event {
                /**
                 * The node that received the payment.
                 * This is useful to identify payments which were received via [phantom nodes].
                 * This field will always be filled in when the event was generated by LDK versions
                 * 0.0.113 and above.
                 * 
                 * [phantom nodes]: crate::sign::PhantomKeysManager
                 * 
                 * Note that this (or a relevant inner pointer) may be NULL or all-0s to represent None
                */
                @Nullable public final byte[] receiver_node_id;
                /**
                 * The payment hash of the claimed payment. Note that LDK will not stop you from
                 * registering duplicate payment hashes for inbound payments.
                */
                public final byte[] payment_hash;
                /**
                 * The value, in thousandths of a satoshi, that this payment is for. May be greater than the
                 * invoice amount.
                */
                public final long amount_msat;
                /**
                 * The purpose of the claimed payment, i.e. whether the payment was for an invoice or a
                 * spontaneous payment.
                */
                public final org.ldk.structs.PaymentPurpose purpose;
                /**
                 * The HTLCs that comprise the claimed payment. This will be empty for events serialized prior
                 * to LDK version 0.0.117.
                */
                public final ClaimedHTLC[] htlcs;
                /**
                 * The sender-intended sum total of all the MPP parts. This will be `None` for events
                 * serialized prior to LDK version 0.0.117.
                */
                public final org.ldk.structs.Option_u64Z sender_intended_total_msat;
                private PaymentClaimed(long ptr, bindings.LDKEvent.PaymentClaimed obj) {
                        super(null, ptr);
                        this.receiver_node_id = obj.receiver_node_id;
                        this.payment_hash = obj.payment_hash;
                        this.amount_msat = obj.amount_msat;
                        long purpose = obj.purpose;
                        org.ldk.structs.PaymentPurpose purpose_hu_conv = org.ldk.structs.PaymentPurpose.constr_from_ptr(purpose);
                        if (purpose_hu_conv != null) { purpose_hu_conv.ptrs_to.add(this); };
                        this.purpose = purpose_hu_conv;
                        long[] htlcs = obj.htlcs;
                        int htlcs_conv_13_len = htlcs.length;
                        ClaimedHTLC[] htlcs_conv_13_arr = new ClaimedHTLC[htlcs_conv_13_len];
                        for (int n = 0; n < htlcs_conv_13_len; n++) {
                                long htlcs_conv_13 = htlcs[n];
                                org.ldk.structs.ClaimedHTLC htlcs_conv_13_hu_conv = null; if (htlcs_conv_13 < 0 || htlcs_conv_13 > 4096) { htlcs_conv_13_hu_conv = new org.ldk.structs.ClaimedHTLC(null, htlcs_conv_13); }
                                if (htlcs_conv_13_hu_conv != null) { htlcs_conv_13_hu_conv.ptrs_to.add(this); };
                                htlcs_conv_13_arr[n] = htlcs_conv_13_hu_conv;
                        }
                        this.htlcs = htlcs_conv_13_arr;
                        long sender_intended_total_msat = obj.sender_intended_total_msat;
                        org.ldk.structs.Option_u64Z sender_intended_total_msat_hu_conv = org.ldk.structs.Option_u64Z.constr_from_ptr(sender_intended_total_msat);
                        if (sender_intended_total_msat_hu_conv != null) { sender_intended_total_msat_hu_conv.ptrs_to.add(this); };
                        this.sender_intended_total_msat = sender_intended_total_msat_hu_conv;
                }
        }
        /**
         * Indicates a request for an invoice failed to yield a response in a reasonable amount of time
         * or was explicitly abandoned by [`ChannelManager::abandon_payment`]. This may be for an
         * [`InvoiceRequest`] sent for an [`Offer`] or for a [`Refund`] that hasn't been redeemed.
         * 
         * [`ChannelManager::abandon_payment`]: crate::ln::channelmanager::ChannelManager::abandon_payment
         * [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
         * [`Offer`]: crate::offers::offer::Offer
         * [`Refund`]: crate::offers::refund::Refund
         */
        public final static class InvoiceRequestFailed extends Event {
                /**
                 * The `payment_id` to have been associated with payment for the requested invoice.
                */
                public final byte[] payment_id;
                private InvoiceRequestFailed(long ptr, bindings.LDKEvent.InvoiceRequestFailed obj) {
                        super(null, ptr);
                        this.payment_id = obj.payment_id;
                }
        }
        /**
         * Indicates an outbound payment we made succeeded (i.e. it made it all the way to its target
         * and we got back the payment preimage for it).
         * 
         * Note for MPP payments: in rare cases, this event may be preceded by a `PaymentPathFailed`
         * event. In this situation, you SHOULD treat this payment as having succeeded.
         */
        public final static class PaymentSent extends Event {
                /**
                 * The `payment_id` passed to [`ChannelManager::send_payment`].
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ payment_id;
                /**
                 * The preimage to the hash given to ChannelManager::send_payment.
                 * Note that this serves as a payment receipt, if you wish to have such a thing, you must
                 * store it somehow!
                */
                public final byte[] payment_preimage;
                /**
                 * The hash that was given to [`ChannelManager::send_payment`].
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                */
                public final byte[] payment_hash;
                /**
                 * The total fee which was spent at intermediate hops in this payment, across all paths.
                 * 
                 * Note that, like [`Route::get_total_fees`] this does *not* include any potential
                 * overpayment to the recipient node.
                 * 
                 * If the recipient or an intermediate node misbehaves and gives us free money, this may
                 * overstate the amount paid, though this is unlikely.
                 * 
                 * [`Route::get_total_fees`]: crate::routing::router::Route::get_total_fees
                */
                public final org.ldk.structs.Option_u64Z fee_paid_msat;
                private PaymentSent(long ptr, bindings.LDKEvent.PaymentSent obj) {
                        super(null, ptr);
                        long payment_id = obj.payment_id;
                        org.ldk.structs.Option_ThirtyTwoBytesZ payment_id_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(payment_id);
                        if (payment_id_hu_conv != null) { payment_id_hu_conv.ptrs_to.add(this); };
                        this.payment_id = payment_id_hu_conv;
                        this.payment_preimage = obj.payment_preimage;
                        this.payment_hash = obj.payment_hash;
                        long fee_paid_msat = obj.fee_paid_msat;
                        org.ldk.structs.Option_u64Z fee_paid_msat_hu_conv = org.ldk.structs.Option_u64Z.constr_from_ptr(fee_paid_msat);
                        if (fee_paid_msat_hu_conv != null) { fee_paid_msat_hu_conv.ptrs_to.add(this); };
                        this.fee_paid_msat = fee_paid_msat_hu_conv;
                }
        }
        /**
         * Indicates an outbound payment failed. Individual [`Event::PaymentPathFailed`] events
         * provide failure information for each path attempt in the payment, including retries.
         * 
         * This event is provided once there are no further pending HTLCs for the payment and the
         * payment is no longer retryable, due either to the [`Retry`] provided or
         * [`ChannelManager::abandon_payment`] having been called for the corresponding payment.
         * 
         * In exceedingly rare cases, it is possible that an [`Event::PaymentFailed`] is generated for
         * a payment after an [`Event::PaymentSent`] event for this same payment has already been
         * received and processed. In this case, the [`Event::PaymentFailed`] event MUST be ignored,
         * and the payment MUST be treated as having succeeded.
         * 
         * [`Retry`]: crate::ln::channelmanager::Retry
         * [`ChannelManager::abandon_payment`]: crate::ln::channelmanager::ChannelManager::abandon_payment
         */
        public final static class PaymentFailed extends Event {
                /**
                 * The `payment_id` passed to [`ChannelManager::send_payment`].
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                */
                public final byte[] payment_id;
                /**
                 * The hash that was given to [`ChannelManager::send_payment`].
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                */
                public final byte[] payment_hash;
                /**
                 * The reason the payment failed. This is only `None` for events generated or serialized
                 * by versions prior to 0.0.115.
                */
                public final org.ldk.structs.Option_PaymentFailureReasonZ reason;
                private PaymentFailed(long ptr, bindings.LDKEvent.PaymentFailed obj) {
                        super(null, ptr);
                        this.payment_id = obj.payment_id;
                        this.payment_hash = obj.payment_hash;
                        long reason = obj.reason;
                        org.ldk.structs.Option_PaymentFailureReasonZ reason_hu_conv = org.ldk.structs.Option_PaymentFailureReasonZ.constr_from_ptr(reason);
                        if (reason_hu_conv != null) { reason_hu_conv.ptrs_to.add(this); };
                        this.reason = reason_hu_conv;
                }
        }
        /**
         * Indicates that a path for an outbound payment was successful.
         * 
         * Always generated after [`Event::PaymentSent`] and thus useful for scoring channels. See
         * [`Event::PaymentSent`] for obtaining the payment preimage.
         */
        public final static class PaymentPathSuccessful extends Event {
                /**
                 * The `payment_id` passed to [`ChannelManager::send_payment`].
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                */
                public final byte[] payment_id;
                /**
                 * The hash that was given to [`ChannelManager::send_payment`].
                 * 
                 * This will be `Some` for all payments which completed on LDK 0.0.104 or later.
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ payment_hash;
                /**
                 * The payment path that was successful.
                 * 
                 * May contain a closed channel if the HTLC sent along the path was fulfilled on chain.
                */
                public final org.ldk.structs.Path path;
                private PaymentPathSuccessful(long ptr, bindings.LDKEvent.PaymentPathSuccessful obj) {
                        super(null, ptr);
                        this.payment_id = obj.payment_id;
                        long payment_hash = obj.payment_hash;
                        org.ldk.structs.Option_ThirtyTwoBytesZ payment_hash_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(payment_hash);
                        if (payment_hash_hu_conv != null) { payment_hash_hu_conv.ptrs_to.add(this); };
                        this.payment_hash = payment_hash_hu_conv;
                        long path = obj.path;
                        org.ldk.structs.Path path_hu_conv = null; if (path < 0 || path > 4096) { path_hu_conv = new org.ldk.structs.Path(null, path); }
                        if (path_hu_conv != null) { path_hu_conv.ptrs_to.add(this); };
                        this.path = path_hu_conv;
                }
        }
        /**
         * Indicates an outbound HTLC we sent failed, likely due to an intermediary node being unable to
         * handle the HTLC.
         * 
         * Note that this does *not* indicate that all paths for an MPP payment have failed, see
         * [`Event::PaymentFailed`].
         * 
         * See [`ChannelManager::abandon_payment`] for giving up on this payment before its retries have
         * been exhausted.
         * 
         * [`ChannelManager::abandon_payment`]: crate::ln::channelmanager::ChannelManager::abandon_payment
         */
        public final static class PaymentPathFailed extends Event {
                /**
                 * The `payment_id` passed to [`ChannelManager::send_payment`].
                 * 
                 * This will be `Some` for all payment paths which failed on LDK 0.0.103 or later.
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                 * [`ChannelManager::abandon_payment`]: crate::ln::channelmanager::ChannelManager::abandon_payment
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ payment_id;
                /**
                 * The hash that was given to [`ChannelManager::send_payment`].
                 * 
                 * [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
                */
                public final byte[] payment_hash;
                /**
                 * Indicates the payment was rejected for some reason by the recipient. This implies that
                 * the payment has failed, not just the route in question. If this is not set, the payment may
                 * be retried via a different route.
                */
                public final boolean payment_failed_permanently;
                /**
                 * Extra error details based on the failure type. May contain an update that needs to be
                 * applied to the [`NetworkGraph`].
                 * 
                 * [`NetworkGraph`]: crate::routing::gossip::NetworkGraph
                */
                public final org.ldk.structs.PathFailure failure;
                /**
                 * The payment path that failed.
                */
                public final org.ldk.structs.Path path;
                /**
                 * The channel responsible for the failed payment path.
                 * 
                 * Note that for route hints or for the first hop in a path this may be an SCID alias and
                 * may not refer to a channel in the public network graph. These aliases may also collide
                 * with channels in the public network graph.
                 * 
                 * If this is `Some`, then the corresponding channel should be avoided when the payment is
                 * retried. May be `None` for older [`Event`] serializations.
                */
                public final org.ldk.structs.Option_u64Z short_channel_id;
                private PaymentPathFailed(long ptr, bindings.LDKEvent.PaymentPathFailed obj) {
                        super(null, ptr);
                        long payment_id = obj.payment_id;
                        org.ldk.structs.Option_ThirtyTwoBytesZ payment_id_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(payment_id);
                        if (payment_id_hu_conv != null) { payment_id_hu_conv.ptrs_to.add(this); };
                        this.payment_id = payment_id_hu_conv;
                        this.payment_hash = obj.payment_hash;
                        this.payment_failed_permanently = obj.payment_failed_permanently;
                        long failure = obj.failure;
                        org.ldk.structs.PathFailure failure_hu_conv = org.ldk.structs.PathFailure.constr_from_ptr(failure);
                        if (failure_hu_conv != null) { failure_hu_conv.ptrs_to.add(this); };
                        this.failure = failure_hu_conv;
                        long path = obj.path;
                        org.ldk.structs.Path path_hu_conv = null; if (path < 0 || path > 4096) { path_hu_conv = new org.ldk.structs.Path(null, path); }
                        if (path_hu_conv != null) { path_hu_conv.ptrs_to.add(this); };
                        this.path = path_hu_conv;
                        long short_channel_id = obj.short_channel_id;
                        org.ldk.structs.Option_u64Z short_channel_id_hu_conv = org.ldk.structs.Option_u64Z.constr_from_ptr(short_channel_id);
                        if (short_channel_id_hu_conv != null) { short_channel_id_hu_conv.ptrs_to.add(this); };
                        this.short_channel_id = short_channel_id_hu_conv;
                }
        }
        /**
         * Indicates that a probe payment we sent returned successful, i.e., only failed at the destination.
         */
        public final static class ProbeSuccessful extends Event {
                /**
                 * The id returned by [`ChannelManager::send_probe`].
                 * 
                 * [`ChannelManager::send_probe`]: crate::ln::channelmanager::ChannelManager::send_probe
                */
                public final byte[] payment_id;
                /**
                 * The hash generated by [`ChannelManager::send_probe`].
                 * 
                 * [`ChannelManager::send_probe`]: crate::ln::channelmanager::ChannelManager::send_probe
                */
                public final byte[] payment_hash;
                /**
                 * The payment path that was successful.
                */
                public final org.ldk.structs.Path path;
                private ProbeSuccessful(long ptr, bindings.LDKEvent.ProbeSuccessful obj) {
                        super(null, ptr);
                        this.payment_id = obj.payment_id;
                        this.payment_hash = obj.payment_hash;
                        long path = obj.path;
                        org.ldk.structs.Path path_hu_conv = null; if (path < 0 || path > 4096) { path_hu_conv = new org.ldk.structs.Path(null, path); }
                        if (path_hu_conv != null) { path_hu_conv.ptrs_to.add(this); };
                        this.path = path_hu_conv;
                }
        }
        /**
         * Indicates that a probe payment we sent failed at an intermediary node on the path.
         */
        public final static class ProbeFailed extends Event {
                /**
                 * The id returned by [`ChannelManager::send_probe`].
                 * 
                 * [`ChannelManager::send_probe`]: crate::ln::channelmanager::ChannelManager::send_probe
                */
                public final byte[] payment_id;
                /**
                 * The hash generated by [`ChannelManager::send_probe`].
                 * 
                 * [`ChannelManager::send_probe`]: crate::ln::channelmanager::ChannelManager::send_probe
                */
                public final byte[] payment_hash;
                /**
                 * The payment path that failed.
                */
                public final org.ldk.structs.Path path;
                /**
                 * The channel responsible for the failed probe.
                 * 
                 * Note that for route hints or for the first hop in a path this may be an SCID alias and
                 * may not refer to a channel in the public network graph. These aliases may also collide
                 * with channels in the public network graph.
                */
                public final org.ldk.structs.Option_u64Z short_channel_id;
                private ProbeFailed(long ptr, bindings.LDKEvent.ProbeFailed obj) {
                        super(null, ptr);
                        this.payment_id = obj.payment_id;
                        this.payment_hash = obj.payment_hash;
                        long path = obj.path;
                        org.ldk.structs.Path path_hu_conv = null; if (path < 0 || path > 4096) { path_hu_conv = new org.ldk.structs.Path(null, path); }
                        if (path_hu_conv != null) { path_hu_conv.ptrs_to.add(this); };
                        this.path = path_hu_conv;
                        long short_channel_id = obj.short_channel_id;
                        org.ldk.structs.Option_u64Z short_channel_id_hu_conv = org.ldk.structs.Option_u64Z.constr_from_ptr(short_channel_id);
                        if (short_channel_id_hu_conv != null) { short_channel_id_hu_conv.ptrs_to.add(this); };
                        this.short_channel_id = short_channel_id_hu_conv;
                }
        }
        /**
         * Used to indicate that [`ChannelManager::process_pending_htlc_forwards`] should be called at
         * a time in the future.
         * 
         * [`ChannelManager::process_pending_htlc_forwards`]: crate::ln::channelmanager::ChannelManager::process_pending_htlc_forwards
         */
        public final static class PendingHTLCsForwardable extends Event {
                /**
                 * The minimum amount of time that should be waited prior to calling
                 * process_pending_htlc_forwards. To increase the effort required to correlate payments,
                 * you should wait a random amount of time in roughly the range (now + time_forwardable,
                 * now + 5*time_forwardable).
                */
                public final long time_forwardable;
                private PendingHTLCsForwardable(long ptr, bindings.LDKEvent.PendingHTLCsForwardable obj) {
                        super(null, ptr);
                        this.time_forwardable = obj.time_forwardable;
                }
        }
        /**
         * Used to indicate that we've intercepted an HTLC forward. This event will only be generated if
         * you've encoded an intercept scid in the receiver's invoice route hints using
         * [`ChannelManager::get_intercept_scid`] and have set [`UserConfig::accept_intercept_htlcs`].
         * 
         * [`ChannelManager::forward_intercepted_htlc`] or
         * [`ChannelManager::fail_intercepted_htlc`] MUST be called in response to this event. See
         * their docs for more information.
         * 
         * [`ChannelManager::get_intercept_scid`]: crate::ln::channelmanager::ChannelManager::get_intercept_scid
         * [`UserConfig::accept_intercept_htlcs`]: crate::util::config::UserConfig::accept_intercept_htlcs
         * [`ChannelManager::forward_intercepted_htlc`]: crate::ln::channelmanager::ChannelManager::forward_intercepted_htlc
         * [`ChannelManager::fail_intercepted_htlc`]: crate::ln::channelmanager::ChannelManager::fail_intercepted_htlc
         */
        public final static class HTLCIntercepted extends Event {
                /**
                 * An id to help LDK identify which HTLC is being forwarded or failed.
                */
                public final byte[] intercept_id;
                /**
                 * The fake scid that was programmed as the next hop's scid, generated using
                 * [`ChannelManager::get_intercept_scid`].
                 * 
                 * [`ChannelManager::get_intercept_scid`]: crate::ln::channelmanager::ChannelManager::get_intercept_scid
                */
                public final long requested_next_hop_scid;
                /**
                 * The payment hash used for this HTLC.
                */
                public final byte[] payment_hash;
                /**
                 * How many msats were received on the inbound edge of this HTLC.
                */
                public final long inbound_amount_msat;
                /**
                 * How many msats the payer intended to route to the next node. Depending on the reason you are
                 * intercepting this payment, you might take a fee by forwarding less than this amount.
                 * Forwarding less than this amount may break compatibility with LDK versions prior to 0.0.116.
                 * 
                 * Note that LDK will NOT check that expected fees were factored into this value. You MUST
                 * check that whatever fee you want has been included here or subtract it as required. Further,
                 * LDK will not stop you from forwarding more than you received.
                */
                public final long expected_outbound_amount_msat;
                private HTLCIntercepted(long ptr, bindings.LDKEvent.HTLCIntercepted obj) {
                        super(null, ptr);
                        this.intercept_id = obj.intercept_id;
                        this.requested_next_hop_scid = obj.requested_next_hop_scid;
                        this.payment_hash = obj.payment_hash;
                        this.inbound_amount_msat = obj.inbound_amount_msat;
                        this.expected_outbound_amount_msat = obj.expected_outbound_amount_msat;
                }
        }
        /**
         * Used to indicate that an output which you should know how to spend was confirmed on chain
         * and is now spendable.
         * Such an output will *not* ever be spent by rust-lightning, and are not at risk of your
         * counterparty spending them due to some kind of timeout. Thus, you need to store them
         * somewhere and spend them when you create on-chain transactions.
         */
        public final static class SpendableOutputs extends Event {
                /**
                 * The outputs which you should store as spendable by you.
                */
                public final SpendableOutputDescriptor[] outputs;
                /**
                 * The `channel_id` indicating which channel the spendable outputs belong to.
                 * 
                 * This will always be `Some` for events generated by LDK versions 0.0.117 and above.
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ channel_id;
                private SpendableOutputs(long ptr, bindings.LDKEvent.SpendableOutputs obj) {
                        super(null, ptr);
                        long[] outputs = obj.outputs;
                        int outputs_conv_27_len = outputs.length;
                        SpendableOutputDescriptor[] outputs_conv_27_arr = new SpendableOutputDescriptor[outputs_conv_27_len];
                        for (int b = 0; b < outputs_conv_27_len; b++) {
                                long outputs_conv_27 = outputs[b];
                                org.ldk.structs.SpendableOutputDescriptor outputs_conv_27_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(outputs_conv_27);
                                if (outputs_conv_27_hu_conv != null) { outputs_conv_27_hu_conv.ptrs_to.add(this); };
                                outputs_conv_27_arr[b] = outputs_conv_27_hu_conv;
                        }
                        this.outputs = outputs_conv_27_arr;
                        long channel_id = obj.channel_id;
                        org.ldk.structs.Option_ThirtyTwoBytesZ channel_id_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(channel_id);
                        if (channel_id_hu_conv != null) { channel_id_hu_conv.ptrs_to.add(this); };
                        this.channel_id = channel_id_hu_conv;
                }
        }
        /**
         * This event is generated when a payment has been successfully forwarded through us and a
         * forwarding fee earned.
         */
        public final static class PaymentForwarded extends Event {
                /**
                 * The incoming channel between the previous node and us. This is only `None` for events
                 * generated or serialized by versions prior to 0.0.107.
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ prev_channel_id;
                /**
                 * The outgoing channel between the next node and us. This is only `None` for events
                 * generated or serialized by versions prior to 0.0.107.
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ next_channel_id;
                /**
                 * The fee, in milli-satoshis, which was earned as a result of the payment.
                 * 
                 * Note that if we force-closed the channel over which we forwarded an HTLC while the HTLC
                 * was pending, the amount the next hop claimed will have been rounded down to the nearest
                 * whole satoshi. Thus, the fee calculated here may be higher than expected as we still
                 * claimed the full value in millisatoshis from the source. In this case,
                 * `claim_from_onchain_tx` will be set.
                 * 
                 * If the channel which sent us the payment has been force-closed, we will claim the funds
                 * via an on-chain transaction. In that case we do not yet know the on-chain transaction
                 * fees which we will spend and will instead set this to `None`. It is possible duplicate
                 * `PaymentForwarded` events are generated for the same payment iff `fee_earned_msat` is
                 * `None`.
                */
                public final org.ldk.structs.Option_u64Z fee_earned_msat;
                /**
                 * If this is `true`, the forwarded HTLC was claimed by our counterparty via an on-chain
                 * transaction.
                */
                public final boolean claim_from_onchain_tx;
                /**
                 * The final amount forwarded, in milli-satoshis, after the fee is deducted.
                 * 
                 * The caveat described above the `fee_earned_msat` field applies here as well.
                */
                public final org.ldk.structs.Option_u64Z outbound_amount_forwarded_msat;
                private PaymentForwarded(long ptr, bindings.LDKEvent.PaymentForwarded obj) {
                        super(null, ptr);
                        long prev_channel_id = obj.prev_channel_id;
                        org.ldk.structs.Option_ThirtyTwoBytesZ prev_channel_id_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(prev_channel_id);
                        if (prev_channel_id_hu_conv != null) { prev_channel_id_hu_conv.ptrs_to.add(this); };
                        this.prev_channel_id = prev_channel_id_hu_conv;
                        long next_channel_id = obj.next_channel_id;
                        org.ldk.structs.Option_ThirtyTwoBytesZ next_channel_id_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(next_channel_id);
                        if (next_channel_id_hu_conv != null) { next_channel_id_hu_conv.ptrs_to.add(this); };
                        this.next_channel_id = next_channel_id_hu_conv;
                        long fee_earned_msat = obj.fee_earned_msat;
                        org.ldk.structs.Option_u64Z fee_earned_msat_hu_conv = org.ldk.structs.Option_u64Z.constr_from_ptr(fee_earned_msat);
                        if (fee_earned_msat_hu_conv != null) { fee_earned_msat_hu_conv.ptrs_to.add(this); };
                        this.fee_earned_msat = fee_earned_msat_hu_conv;
                        this.claim_from_onchain_tx = obj.claim_from_onchain_tx;
                        long outbound_amount_forwarded_msat = obj.outbound_amount_forwarded_msat;
                        org.ldk.structs.Option_u64Z outbound_amount_forwarded_msat_hu_conv = org.ldk.structs.Option_u64Z.constr_from_ptr(outbound_amount_forwarded_msat);
                        if (outbound_amount_forwarded_msat_hu_conv != null) { outbound_amount_forwarded_msat_hu_conv.ptrs_to.add(this); };
                        this.outbound_amount_forwarded_msat = outbound_amount_forwarded_msat_hu_conv;
                }
        }
        /**
         * Used to indicate that a channel with the given `channel_id` is being opened and pending
         * confirmation on-chain.
         * 
         * This event is emitted when the funding transaction has been signed and is broadcast to the
         * network. For 0conf channels it will be immediately followed by the corresponding
         * [`Event::ChannelReady`] event.
         */
        public final static class ChannelPending extends Event {
                /**
                 * The `channel_id` of the channel that is pending confirmation.
                */
                public final byte[] channel_id;
                /**
                 * The `user_channel_id` value passed in to [`ChannelManager::create_channel`] for outbound
                 * channels, or to [`ChannelManager::accept_inbound_channel`] for inbound channels if
                 * [`UserConfig::manually_accept_inbound_channels`] config flag is set to true. Otherwise
                 * `user_channel_id` will be randomized for an inbound channel.
                 * 
                 * [`ChannelManager::create_channel`]: crate::ln::channelmanager::ChannelManager::create_channel
                 * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
                 * [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels
                */
                public final org.ldk.util.UInt128 user_channel_id;
                /**
                 * The `temporary_channel_id` this channel used to be known by during channel establishment.
                 * 
                 * Will be `None` for channels created prior to LDK version 0.0.115.
                */
                public final org.ldk.structs.Option_ThirtyTwoBytesZ former_temporary_channel_id;
                /**
                 * The `node_id` of the channel counterparty.
                */
                public final byte[] counterparty_node_id;
                /**
                 * The outpoint of the channel's funding transaction.
                */
                public final org.ldk.structs.OutPoint funding_txo;
                private ChannelPending(long ptr, bindings.LDKEvent.ChannelPending obj) {
                        super(null, ptr);
                        this.channel_id = obj.channel_id;
                        byte[] user_channel_id = obj.user_channel_id;
                        org.ldk.util.UInt128 user_channel_id_conv = new org.ldk.util.UInt128(user_channel_id);
                        this.user_channel_id = user_channel_id_conv;
                        long former_temporary_channel_id = obj.former_temporary_channel_id;
                        org.ldk.structs.Option_ThirtyTwoBytesZ former_temporary_channel_id_hu_conv = org.ldk.structs.Option_ThirtyTwoBytesZ.constr_from_ptr(former_temporary_channel_id);
                        if (former_temporary_channel_id_hu_conv != null) { former_temporary_channel_id_hu_conv.ptrs_to.add(this); };
                        this.former_temporary_channel_id = former_temporary_channel_id_hu_conv;
                        this.counterparty_node_id = obj.counterparty_node_id;
                        long funding_txo = obj.funding_txo;
                        org.ldk.structs.OutPoint funding_txo_hu_conv = null; if (funding_txo < 0 || funding_txo > 4096) { funding_txo_hu_conv = new org.ldk.structs.OutPoint(null, funding_txo); }
                        if (funding_txo_hu_conv != null) { funding_txo_hu_conv.ptrs_to.add(this); };
                        this.funding_txo = funding_txo_hu_conv;
                }
        }
        /**
         * Used to indicate that a channel with the given `channel_id` is ready to
         * be used. This event is emitted either when the funding transaction has been confirmed
         * on-chain, or, in case of a 0conf channel, when both parties have confirmed the channel
         * establishment.
         */
        public final static class ChannelReady extends Event {
                /**
                 * The `channel_id` of the channel that is ready.
                */
                public final byte[] channel_id;
                /**
                 * The `user_channel_id` value passed in to [`ChannelManager::create_channel`] for outbound
                 * channels, or to [`ChannelManager::accept_inbound_channel`] for inbound channels if
                 * [`UserConfig::manually_accept_inbound_channels`] config flag is set to true. Otherwise
                 * `user_channel_id` will be randomized for an inbound channel.
                 * 
                 * [`ChannelManager::create_channel`]: crate::ln::channelmanager::ChannelManager::create_channel
                 * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
                 * [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels
                */
                public final org.ldk.util.UInt128 user_channel_id;
                /**
                 * The `node_id` of the channel counterparty.
                */
                public final byte[] counterparty_node_id;
                /**
                 * The features that this channel will operate with.
                */
                public final org.ldk.structs.ChannelTypeFeatures channel_type;
                private ChannelReady(long ptr, bindings.LDKEvent.ChannelReady obj) {
                        super(null, ptr);
                        this.channel_id = obj.channel_id;
                        byte[] user_channel_id = obj.user_channel_id;
                        org.ldk.util.UInt128 user_channel_id_conv = new org.ldk.util.UInt128(user_channel_id);
                        this.user_channel_id = user_channel_id_conv;
                        this.counterparty_node_id = obj.counterparty_node_id;
                        long channel_type = obj.channel_type;
                        org.ldk.structs.ChannelTypeFeatures channel_type_hu_conv = null; if (channel_type < 0 || channel_type > 4096) { channel_type_hu_conv = new org.ldk.structs.ChannelTypeFeatures(null, channel_type); }
                        if (channel_type_hu_conv != null) { channel_type_hu_conv.ptrs_to.add(this); };
                        this.channel_type = channel_type_hu_conv;
                }
        }
        /**
         * Used to indicate that a previously opened channel with the given `channel_id` is in the
         * process of closure.
         * 
         * Note that this event is only triggered for accepted channels: if the
         * [`UserConfig::manually_accept_inbound_channels`] config flag is set to true and the channel is
         * rejected, no `ChannelClosed` event will be sent.
         * 
         * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
         * [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels
         */
        public final static class ChannelClosed extends Event {
                /**
                 * The `channel_id` of the channel which has been closed. Note that on-chain transactions
                 * resolving the channel are likely still awaiting confirmation.
                */
                public final byte[] channel_id;
                /**
                 * The `user_channel_id` value passed in to [`ChannelManager::create_channel`] for outbound
                 * channels, or to [`ChannelManager::accept_inbound_channel`] for inbound channels if
                 * [`UserConfig::manually_accept_inbound_channels`] config flag is set to true. Otherwise
                 * `user_channel_id` will be randomized for inbound channels.
                 * This may be zero for inbound channels serialized prior to 0.0.113 and will always be
                 * zero for objects serialized with LDK versions prior to 0.0.102.
                 * 
                 * [`ChannelManager::create_channel`]: crate::ln::channelmanager::ChannelManager::create_channel
                 * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
                 * [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels
                */
                public final org.ldk.util.UInt128 user_channel_id;
                /**
                 * The reason the channel was closed.
                */
                public final org.ldk.structs.ClosureReason reason;
                /**
                 * Counterparty in the closed channel.
                 * 
                 * This field will be `None` for objects serialized prior to LDK 0.0.117.
                 * 
                 * Note that this (or a relevant inner pointer) may be NULL or all-0s to represent None
                */
                @Nullable public final byte[] counterparty_node_id;
                /**
                 * Channel capacity of the closing channel (sats).
                 * 
                 * This field will be `None` for objects serialized prior to LDK 0.0.117.
                */
                public final org.ldk.structs.Option_u64Z channel_capacity_sats;
                private ChannelClosed(long ptr, bindings.LDKEvent.ChannelClosed obj) {
                        super(null, ptr);
                        this.channel_id = obj.channel_id;
                        byte[] user_channel_id = obj.user_channel_id;
                        org.ldk.util.UInt128 user_channel_id_conv = new org.ldk.util.UInt128(user_channel_id);
                        this.user_channel_id = user_channel_id_conv;
                        long reason = obj.reason;
                        org.ldk.structs.ClosureReason reason_hu_conv = org.ldk.structs.ClosureReason.constr_from_ptr(reason);
                        if (reason_hu_conv != null) { reason_hu_conv.ptrs_to.add(this); };
                        this.reason = reason_hu_conv;
                        this.counterparty_node_id = obj.counterparty_node_id;
                        long channel_capacity_sats = obj.channel_capacity_sats;
                        org.ldk.structs.Option_u64Z channel_capacity_sats_hu_conv = org.ldk.structs.Option_u64Z.constr_from_ptr(channel_capacity_sats);
                        if (channel_capacity_sats_hu_conv != null) { channel_capacity_sats_hu_conv.ptrs_to.add(this); };
                        this.channel_capacity_sats = channel_capacity_sats_hu_conv;
                }
        }
        /**
         * Used to indicate to the user that they can abandon the funding transaction and recycle the
         * inputs for another purpose.
         * 
         * This event is not guaranteed to be generated for channels that are closed due to a restart.
         */
        public final static class DiscardFunding extends Event {
                /**
                 * The channel_id of the channel which has been closed.
                */
                public final byte[] channel_id;
                /**
                 * The full transaction received from the user
                */
                public final byte[] transaction;
                private DiscardFunding(long ptr, bindings.LDKEvent.DiscardFunding obj) {
                        super(null, ptr);
                        this.channel_id = obj.channel_id;
                        this.transaction = obj.transaction;
                }
        }
        /**
         * Indicates a request to open a new channel by a peer.
         * 
         * To accept the request, call [`ChannelManager::accept_inbound_channel`]. To reject the request,
         * call [`ChannelManager::force_close_without_broadcasting_txn`]. Note that a ['ChannelClosed`]
         * event will _not_ be triggered if the channel is rejected.
         * 
         * The event is only triggered when a new open channel request is received and the
         * [`UserConfig::manually_accept_inbound_channels`] config flag is set to true.
         * 
         * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
         * [`ChannelManager::force_close_without_broadcasting_txn`]: crate::ln::channelmanager::ChannelManager::force_close_without_broadcasting_txn
         * [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels
         */
        public final static class OpenChannelRequest extends Event {
                /**
                 * The temporary channel ID of the channel requested to be opened.
                 * 
                 * When responding to the request, the `temporary_channel_id` should be passed
                 * back to the ChannelManager through [`ChannelManager::accept_inbound_channel`] to accept,
                 * or through [`ChannelManager::force_close_without_broadcasting_txn`] to reject.
                 * 
                 * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
                 * [`ChannelManager::force_close_without_broadcasting_txn`]: crate::ln::channelmanager::ChannelManager::force_close_without_broadcasting_txn
                */
                public final byte[] temporary_channel_id;
                /**
                 * The node_id of the counterparty requesting to open the channel.
                 * 
                 * When responding to the request, the `counterparty_node_id` should be passed
                 * back to the `ChannelManager` through [`ChannelManager::accept_inbound_channel`] to
                 * accept the request, or through [`ChannelManager::force_close_without_broadcasting_txn`] to reject the
                 * request.
                 * 
                 * [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel
                 * [`ChannelManager::force_close_without_broadcasting_txn`]: crate::ln::channelmanager::ChannelManager::force_close_without_broadcasting_txn
                */
                public final byte[] counterparty_node_id;
                /**
                 * The channel value of the requested channel.
                */
                public final long funding_satoshis;
                /**
                 * Our starting balance in the channel if the request is accepted, in milli-satoshi.
                */
                public final long push_msat;
                /**
                 * The features that this channel will operate with. If you reject the channel, a
                 * well-behaved counterparty may automatically re-attempt the channel with a new set of
                 * feature flags.
                 * 
                 * Note that if [`ChannelTypeFeatures::supports_scid_privacy`] returns true on this type,
                 * the resulting [`ChannelManager`] will not be readable by versions of LDK prior to
                 * 0.0.106.
                 * 
                 * Furthermore, note that if [`ChannelTypeFeatures::supports_zero_conf`] returns true on this type,
                 * the resulting [`ChannelManager`] will not be readable by versions of LDK prior to
                 * 0.0.107. Channels setting this type also need to get manually accepted via
                 * [`crate::ln::channelmanager::ChannelManager::accept_inbound_channel_from_trusted_peer_0conf`],
                 * or will be rejected otherwise.
                 * 
                 * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
                */
                public final org.ldk.structs.ChannelTypeFeatures channel_type;
                private OpenChannelRequest(long ptr, bindings.LDKEvent.OpenChannelRequest obj) {
                        super(null, ptr);
                        this.temporary_channel_id = obj.temporary_channel_id;
                        this.counterparty_node_id = obj.counterparty_node_id;
                        this.funding_satoshis = obj.funding_satoshis;
                        this.push_msat = obj.push_msat;
                        long channel_type = obj.channel_type;
                        org.ldk.structs.ChannelTypeFeatures channel_type_hu_conv = null; if (channel_type < 0 || channel_type > 4096) { channel_type_hu_conv = new org.ldk.structs.ChannelTypeFeatures(null, channel_type); }
                        if (channel_type_hu_conv != null) { channel_type_hu_conv.ptrs_to.add(this); };
                        this.channel_type = channel_type_hu_conv;
                }
        }
        /**
         * Indicates that the HTLC was accepted, but could not be processed when or after attempting to
         * forward it.
         * 
         * Some scenarios where this event may be sent include:
         * Insufficient capacity in the outbound channel
         * While waiting to forward the HTLC, the channel it is meant to be forwarded through closes
         * When an unknown SCID is requested for forwarding a payment.
         * Expected MPP amount has already been reached
         * The HTLC has timed out
         * 
         * This event, however, does not get generated if an HTLC fails to meet the forwarding
         * requirements (i.e. insufficient fees paid, or a CLTV that is too soon).
         */
        public final static class HTLCHandlingFailed extends Event {
                /**
                 * The channel over which the HTLC was received.
                */
                public final byte[] prev_channel_id;
                /**
                 * Destination of the HTLC that failed to be processed.
                */
                public final org.ldk.structs.HTLCDestination failed_next_destination;
                private HTLCHandlingFailed(long ptr, bindings.LDKEvent.HTLCHandlingFailed obj) {
                        super(null, ptr);
                        this.prev_channel_id = obj.prev_channel_id;
                        long failed_next_destination = obj.failed_next_destination;
                        org.ldk.structs.HTLCDestination failed_next_destination_hu_conv = org.ldk.structs.HTLCDestination.constr_from_ptr(failed_next_destination);
                        if (failed_next_destination_hu_conv != null) { failed_next_destination_hu_conv.ptrs_to.add(this); };
                        this.failed_next_destination = failed_next_destination_hu_conv;
                }
        }
        /**
         * Indicates that a transaction originating from LDK needs to have its fee bumped. This event
         * requires confirmed external funds to be readily available to spend.
         * 
         * LDK does not currently generate this event unless the
         * [`ChannelHandshakeConfig::negotiate_anchors_zero_fee_htlc_tx`] config flag is set to true.
         * It is limited to the scope of channels with anchor outputs.
         * 
         * [`ChannelHandshakeConfig::negotiate_anchors_zero_fee_htlc_tx`]: crate::util::config::ChannelHandshakeConfig::negotiate_anchors_zero_fee_htlc_tx
         */
        public final static class BumpTransaction extends Event {
                public final org.ldk.structs.BumpTransactionEvent bump_transaction;
                private BumpTransaction(long ptr, bindings.LDKEvent.BumpTransaction obj) {
                        super(null, ptr);
                        long bump_transaction = obj.bump_transaction;
                        org.ldk.structs.BumpTransactionEvent bump_transaction_hu_conv = org.ldk.structs.BumpTransactionEvent.constr_from_ptr(bump_transaction);
                        if (bump_transaction_hu_conv != null) { bump_transaction_hu_conv.ptrs_to.add(this); };
                        this.bump_transaction = bump_transaction_hu_conv;
                }
        }
        long clone_ptr() {
                long ret = bindings.Event_clone_ptr(this.ptr);
                Reference.reachabilityFence(this);
                return ret;
        }

        /**
         * Creates a copy of the Event
         */
        public Event clone() {
                long ret = bindings.Event_clone(this.ptr);
                Reference.reachabilityFence(this);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new FundingGenerationReady-variant Event
         */
        public static Event funding_generation_ready(byte[] temporary_channel_id, byte[] counterparty_node_id, long channel_value_satoshis, byte[] output_script, org.ldk.util.UInt128 user_channel_id) {
                long ret = bindings.Event_funding_generation_ready(InternalUtils.check_arr_len(temporary_channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33), channel_value_satoshis, output_script, user_channel_id.getLEBytes());
                Reference.reachabilityFence(temporary_channel_id);
                Reference.reachabilityFence(counterparty_node_id);
                Reference.reachabilityFence(channel_value_satoshis);
                Reference.reachabilityFence(output_script);
                Reference.reachabilityFence(user_channel_id);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PaymentClaimable-variant Event
         */
        public static Event payment_claimable(byte[] receiver_node_id, byte[] payment_hash, org.ldk.structs.RecipientOnionFields onion_fields, long amount_msat, long counterparty_skimmed_fee_msat, org.ldk.structs.PaymentPurpose purpose, org.ldk.structs.Option_ThirtyTwoBytesZ via_channel_id, org.ldk.structs.Option_U128Z via_user_channel_id, org.ldk.structs.Option_u32Z claim_deadline) {
                long ret = bindings.Event_payment_claimable(InternalUtils.check_arr_len(receiver_node_id, 33), InternalUtils.check_arr_len(payment_hash, 32), onion_fields == null ? 0 : onion_fields.ptr, amount_msat, counterparty_skimmed_fee_msat, purpose.ptr, via_channel_id.ptr, via_user_channel_id.ptr, claim_deadline.ptr);
                Reference.reachabilityFence(receiver_node_id);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(onion_fields);
                Reference.reachabilityFence(amount_msat);
                Reference.reachabilityFence(counterparty_skimmed_fee_msat);
                Reference.reachabilityFence(purpose);
                Reference.reachabilityFence(via_channel_id);
                Reference.reachabilityFence(via_user_channel_id);
                Reference.reachabilityFence(claim_deadline);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(onion_fields); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(purpose); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(via_channel_id); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(via_user_channel_id); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(claim_deadline); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PaymentClaimed-variant Event
         */
        public static Event payment_claimed(byte[] receiver_node_id, byte[] payment_hash, long amount_msat, org.ldk.structs.PaymentPurpose purpose, ClaimedHTLC[] htlcs, org.ldk.structs.Option_u64Z sender_intended_total_msat) {
                long ret = bindings.Event_payment_claimed(InternalUtils.check_arr_len(receiver_node_id, 33), InternalUtils.check_arr_len(payment_hash, 32), amount_msat, purpose.ptr, htlcs != null ? Arrays.stream(htlcs).mapToLong(htlcs_conv_13 -> htlcs_conv_13 == null ? 0 : htlcs_conv_13.ptr).toArray() : null, sender_intended_total_msat.ptr);
                Reference.reachabilityFence(receiver_node_id);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(amount_msat);
                Reference.reachabilityFence(purpose);
                Reference.reachabilityFence(htlcs);
                Reference.reachabilityFence(sender_intended_total_msat);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(purpose); };
                for (ClaimedHTLC htlcs_conv_13: htlcs) { if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(htlcs_conv_13); }; };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(sender_intended_total_msat); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new InvoiceRequestFailed-variant Event
         */
        public static Event invoice_request_failed(byte[] payment_id) {
                long ret = bindings.Event_invoice_request_failed(InternalUtils.check_arr_len(payment_id, 32));
                Reference.reachabilityFence(payment_id);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PaymentSent-variant Event
         */
        public static Event payment_sent(org.ldk.structs.Option_ThirtyTwoBytesZ payment_id, byte[] payment_preimage, byte[] payment_hash, org.ldk.structs.Option_u64Z fee_paid_msat) {
                long ret = bindings.Event_payment_sent(payment_id.ptr, InternalUtils.check_arr_len(payment_preimage, 32), InternalUtils.check_arr_len(payment_hash, 32), fee_paid_msat.ptr);
                Reference.reachabilityFence(payment_id);
                Reference.reachabilityFence(payment_preimage);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(fee_paid_msat);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(payment_id); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(fee_paid_msat); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PaymentFailed-variant Event
         */
        public static Event payment_failed(byte[] payment_id, byte[] payment_hash, org.ldk.structs.Option_PaymentFailureReasonZ reason) {
                long ret = bindings.Event_payment_failed(InternalUtils.check_arr_len(payment_id, 32), InternalUtils.check_arr_len(payment_hash, 32), reason.ptr);
                Reference.reachabilityFence(payment_id);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(reason);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(reason); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PaymentPathSuccessful-variant Event
         */
        public static Event payment_path_successful(byte[] payment_id, org.ldk.structs.Option_ThirtyTwoBytesZ payment_hash, org.ldk.structs.Path path) {
                long ret = bindings.Event_payment_path_successful(InternalUtils.check_arr_len(payment_id, 32), payment_hash.ptr, path == null ? 0 : path.ptr);
                Reference.reachabilityFence(payment_id);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(path);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(payment_hash); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(path); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PaymentPathFailed-variant Event
         */
        public static Event payment_path_failed(org.ldk.structs.Option_ThirtyTwoBytesZ payment_id, byte[] payment_hash, boolean payment_failed_permanently, org.ldk.structs.PathFailure failure, org.ldk.structs.Path path, org.ldk.structs.Option_u64Z short_channel_id) {
                long ret = bindings.Event_payment_path_failed(payment_id.ptr, InternalUtils.check_arr_len(payment_hash, 32), payment_failed_permanently, failure.ptr, path == null ? 0 : path.ptr, short_channel_id.ptr);
                Reference.reachabilityFence(payment_id);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(payment_failed_permanently);
                Reference.reachabilityFence(failure);
                Reference.reachabilityFence(path);
                Reference.reachabilityFence(short_channel_id);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(payment_id); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(failure); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(path); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(short_channel_id); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new ProbeSuccessful-variant Event
         */
        public static Event probe_successful(byte[] payment_id, byte[] payment_hash, org.ldk.structs.Path path) {
                long ret = bindings.Event_probe_successful(InternalUtils.check_arr_len(payment_id, 32), InternalUtils.check_arr_len(payment_hash, 32), path == null ? 0 : path.ptr);
                Reference.reachabilityFence(payment_id);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(path);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(path); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new ProbeFailed-variant Event
         */
        public static Event probe_failed(byte[] payment_id, byte[] payment_hash, org.ldk.structs.Path path, org.ldk.structs.Option_u64Z short_channel_id) {
                long ret = bindings.Event_probe_failed(InternalUtils.check_arr_len(payment_id, 32), InternalUtils.check_arr_len(payment_hash, 32), path == null ? 0 : path.ptr, short_channel_id.ptr);
                Reference.reachabilityFence(payment_id);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(path);
                Reference.reachabilityFence(short_channel_id);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(path); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(short_channel_id); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PendingHTLCsForwardable-variant Event
         */
        public static Event pending_htlcs_forwardable(long time_forwardable) {
                long ret = bindings.Event_pending_htlcs_forwardable(time_forwardable);
                Reference.reachabilityFence(time_forwardable);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new HTLCIntercepted-variant Event
         */
        public static Event htlcintercepted(byte[] intercept_id, long requested_next_hop_scid, byte[] payment_hash, long inbound_amount_msat, long expected_outbound_amount_msat) {
                long ret = bindings.Event_htlcintercepted(InternalUtils.check_arr_len(intercept_id, 32), requested_next_hop_scid, InternalUtils.check_arr_len(payment_hash, 32), inbound_amount_msat, expected_outbound_amount_msat);
                Reference.reachabilityFence(intercept_id);
                Reference.reachabilityFence(requested_next_hop_scid);
                Reference.reachabilityFence(payment_hash);
                Reference.reachabilityFence(inbound_amount_msat);
                Reference.reachabilityFence(expected_outbound_amount_msat);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new SpendableOutputs-variant Event
         */
        public static Event spendable_outputs(SpendableOutputDescriptor[] outputs, org.ldk.structs.Option_ThirtyTwoBytesZ channel_id) {
                long ret = bindings.Event_spendable_outputs(outputs != null ? Arrays.stream(outputs).mapToLong(outputs_conv_27 -> outputs_conv_27.ptr).toArray() : null, channel_id.ptr);
                Reference.reachabilityFence(outputs);
                Reference.reachabilityFence(channel_id);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                for (SpendableOutputDescriptor outputs_conv_27: outputs) { if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(outputs_conv_27); }; };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(channel_id); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new PaymentForwarded-variant Event
         */
        public static Event payment_forwarded(org.ldk.structs.Option_ThirtyTwoBytesZ prev_channel_id, org.ldk.structs.Option_ThirtyTwoBytesZ next_channel_id, org.ldk.structs.Option_u64Z fee_earned_msat, boolean claim_from_onchain_tx, org.ldk.structs.Option_u64Z outbound_amount_forwarded_msat) {
                long ret = bindings.Event_payment_forwarded(prev_channel_id.ptr, next_channel_id.ptr, fee_earned_msat.ptr, claim_from_onchain_tx, outbound_amount_forwarded_msat.ptr);
                Reference.reachabilityFence(prev_channel_id);
                Reference.reachabilityFence(next_channel_id);
                Reference.reachabilityFence(fee_earned_msat);
                Reference.reachabilityFence(claim_from_onchain_tx);
                Reference.reachabilityFence(outbound_amount_forwarded_msat);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(prev_channel_id); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(next_channel_id); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(fee_earned_msat); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(outbound_amount_forwarded_msat); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new ChannelPending-variant Event
         */
        public static Event channel_pending(byte[] channel_id, org.ldk.util.UInt128 user_channel_id, org.ldk.structs.Option_ThirtyTwoBytesZ former_temporary_channel_id, byte[] counterparty_node_id, org.ldk.structs.OutPoint funding_txo) {
                long ret = bindings.Event_channel_pending(InternalUtils.check_arr_len(channel_id, 32), user_channel_id.getLEBytes(), former_temporary_channel_id.ptr, InternalUtils.check_arr_len(counterparty_node_id, 33), funding_txo == null ? 0 : funding_txo.ptr);
                Reference.reachabilityFence(channel_id);
                Reference.reachabilityFence(user_channel_id);
                Reference.reachabilityFence(former_temporary_channel_id);
                Reference.reachabilityFence(counterparty_node_id);
                Reference.reachabilityFence(funding_txo);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(former_temporary_channel_id); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(funding_txo); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new ChannelReady-variant Event
         */
        public static Event channel_ready(byte[] channel_id, org.ldk.util.UInt128 user_channel_id, byte[] counterparty_node_id, org.ldk.structs.ChannelTypeFeatures channel_type) {
                long ret = bindings.Event_channel_ready(InternalUtils.check_arr_len(channel_id, 32), user_channel_id.getLEBytes(), InternalUtils.check_arr_len(counterparty_node_id, 33), channel_type == null ? 0 : channel_type.ptr);
                Reference.reachabilityFence(channel_id);
                Reference.reachabilityFence(user_channel_id);
                Reference.reachabilityFence(counterparty_node_id);
                Reference.reachabilityFence(channel_type);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(channel_type); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new ChannelClosed-variant Event
         */
        public static Event channel_closed(byte[] channel_id, org.ldk.util.UInt128 user_channel_id, org.ldk.structs.ClosureReason reason, byte[] counterparty_node_id, org.ldk.structs.Option_u64Z channel_capacity_sats) {
                long ret = bindings.Event_channel_closed(InternalUtils.check_arr_len(channel_id, 32), user_channel_id.getLEBytes(), reason.ptr, InternalUtils.check_arr_len(counterparty_node_id, 33), channel_capacity_sats.ptr);
                Reference.reachabilityFence(channel_id);
                Reference.reachabilityFence(user_channel_id);
                Reference.reachabilityFence(reason);
                Reference.reachabilityFence(counterparty_node_id);
                Reference.reachabilityFence(channel_capacity_sats);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(reason); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(channel_capacity_sats); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new DiscardFunding-variant Event
         */
        public static Event discard_funding(byte[] channel_id, byte[] transaction) {
                long ret = bindings.Event_discard_funding(InternalUtils.check_arr_len(channel_id, 32), transaction);
                Reference.reachabilityFence(channel_id);
                Reference.reachabilityFence(transaction);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new OpenChannelRequest-variant Event
         */
        public static Event open_channel_request(byte[] temporary_channel_id, byte[] counterparty_node_id, long funding_satoshis, long push_msat, org.ldk.structs.ChannelTypeFeatures channel_type) {
                long ret = bindings.Event_open_channel_request(InternalUtils.check_arr_len(temporary_channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33), funding_satoshis, push_msat, channel_type == null ? 0 : channel_type.ptr);
                Reference.reachabilityFence(temporary_channel_id);
                Reference.reachabilityFence(counterparty_node_id);
                Reference.reachabilityFence(funding_satoshis);
                Reference.reachabilityFence(push_msat);
                Reference.reachabilityFence(channel_type);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(channel_type); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new HTLCHandlingFailed-variant Event
         */
        public static Event htlchandling_failed(byte[] prev_channel_id, org.ldk.structs.HTLCDestination failed_next_destination) {
                long ret = bindings.Event_htlchandling_failed(InternalUtils.check_arr_len(prev_channel_id, 32), failed_next_destination.ptr);
                Reference.reachabilityFence(prev_channel_id);
                Reference.reachabilityFence(failed_next_destination);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(failed_next_destination); };
                return ret_hu_conv;
        }

        /**
         * Utility method to constructs a new BumpTransaction-variant Event
         */
        public static Event bump_transaction(org.ldk.structs.BumpTransactionEvent a) {
                long ret = bindings.Event_bump_transaction(a.ptr);
                Reference.reachabilityFence(a);
                if (ret >= 0 && ret <= 4096) { return null; }
                org.ldk.structs.Event ret_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret);
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
                if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(a); };
                return ret_hu_conv;
        }

        /**
         * Checks if two Events contain equal inner contents.
         * This ignores pointers and is_owned flags and looks at the values in fields.
         */
        public boolean eq(org.ldk.structs.Event b) {
                boolean ret = bindings.Event_eq(this.ptr, b == null ? 0 : b.ptr);
                Reference.reachabilityFence(this);
                Reference.reachabilityFence(b);
                return ret;
        }

        @Override public boolean equals(Object o) {
                if (!(o instanceof Event)) return false;
                return this.eq((Event)o);
        }
        /**
         * Serialize the Event object into a byte array which can be read by Event_read
         */
        public byte[] write() {
                byte[] ret = bindings.Event_write(this.ptr);
                Reference.reachabilityFence(this);
                return ret;
        }

}