const impl_holder: LDKBroadcasterInterfaceHolder = new LDKBroadcasterInterfaceHolder();
let structImplementation = {
broadcast_transaction (tx: number): void {
const impl_holder: LDKBroadcasterInterfaceHolder = new LDKBroadcasterInterfaceHolder();
let structImplementation = {
broadcast_transaction (tx: number): void {