closeRemoteDeviceByAdmin method
Implementation
Future<TUIActionCallback> closeRemoteDeviceByAdmin(String userId, TUIMediaDevice device) {
  String userData = Tools.generateUserData();
  Completer<TUIActionCallback> completer = Completer();
  _actionCallback2Future(userData, completer);
  _engineSDK.Dart_CloseRemoteDeviceByAdmin(
      _engineFFIPointer,
      Tools.string2PointerChar(userId),
      device.value(),
      Tools.string2PointerChar(userData));
  return completer.future;
}