typedef struct nativeHTLCUpdateOpaque LDKnativeHTLCUpdate;
struct nativeChannelMonitorOpaque;
typedef struct nativeChannelMonitorOpaque LDKnativeChannelMonitor;
+struct nativeWatchedOutputOpaque;
+typedef struct nativeWatchedOutputOpaque LDKnativeWatchedOutput;
struct nativeChannelManagerOpaque;
typedef struct nativeChannelManagerOpaque LDKnativeChannelManager;
struct nativeChainParametersOpaque;