/// <summary> /// 当能被引用时则产生一个包含引用信息的消息构造器 /// </summary> /// <param name="chain">被引用的消息链</param> /// <returns>包含引用信息的消息构造器</returns> public static MessageChainBuilder MakeReply(this MessageChain chain) { var builder = new MessageChainBuilder(); builder.AddQuote(((Source)chain.First(x => x is Source)).MessageId); return(builder); }