import org.ldk.enums.*;
import org.ldk.util.*;
import java.util.Arrays;
+import javax.annotation.Nullable;
/**
* The `Filter` trait defines behavior for indicating chain activity of interest pertaining to
*/
public Option_C2Tuple_usizeTransactionZZ register_output(WatchedOutput output) {
long ret = bindings.Filter_register_output(this.ptr, output == null ? 0 : output.ptr & ~1);
+ if (ret < 1024) { return null; }
Option_C2Tuple_usizeTransactionZZ ret_hu_conv = Option_C2Tuple_usizeTransactionZZ.constr_from_ptr(ret);
ret_hu_conv.ptrs_to.add(this);
this.ptrs_to.add(output);