enterChatRoom method Null safety

Future<JMConversationInfo> enterChatRoom(
  1. {required String? roomId}
)

Implementation

Future<JMConversationInfo> enterChatRoom({
  required String? roomId,
}) async {
  Map resJson = await _channel.invokeMethod('enterChatRoom',
      {'roomId': roomId}..removeWhere((key, value) => value == null));

  return JMConversationInfo.fromJson(resJson);
}