cancel method
Implementation
@override
Future<V2TimCallback> cancel({
  required String inviteID,
  String? data,
}) async {
  return _v2timSignalingManager.cancel(inviteID: inviteID, data: data);
}
@override
Future<V2TimCallback> cancel({
  required String inviteID,
  String? data,
}) async {
  return _v2timSignalingManager.cancel(inviteID: inviteID, data: data);
}