queryConversation method
MARK: - Conversation
Implementation
Future<Map<dynamic, dynamic>> queryConversation(
    String conversationID, dynamic conversationType) async {
  final result = await promiseToFuture(ZIM
          .getInstance()!
          .queryConversation(conversationID, conversationType))
      .catchError(_handleError);
  return _jsObjectToMap(result);
}