addAdvancedMsgListener method Null safety

Future<void> addAdvancedMsgListener(
  1. {required V2TimAdvancedMsgListener listener}
)

Add an event listener for advanced messages

Implementation

Future<void> addAdvancedMsgListener({
  required V2TimAdvancedMsgListener listener,
}) {
  final String uuid = Uuid().v4();
  this.advancedMsgListenerList[uuid] = listener;
  return ImFlutterPlatform.instance
      .addAdvancedMsgListener(listener: listener, listenerUuid: uuid);
}