addReaction method
~english Adds a Reaction.
Param messageId The message ID.
Param reaction The Reaction content.
Throws A description of the exception. See ChatError. ~end
~chinese 添加 Reaction。
Param messageId 要添加 Reaction 的消息 ID。
Param reaction Reaction 的内容。
Throws 如果有异常会在此抛出,包括错误码和错误信息,详见 详见 ChatError。 ~end
Implementation
Future<void> addReaction({
  required String messageId,
  required String reaction,
}) async {
  Map req = {"reaction": reaction, "msgId": messageId};
  Map result =
      await ChatChannel.invokeMethod(ChatMethodKeys.addReaction, req);
  try {
    ChatError.hasErrorFromResult(result);
  } on ChatError catch (e) {
    throw e;
  }
}