public static MessageReplyCreated AddMessageReplyCreatedEventHandler <T>(
            this RoomWatcher <T> rw,
            Action <MessageReply> callback)
            where T : IWebSocket
        {
            callback.ThrowIfNull(nameof(callback));

            var eventProcessor = new MessageReplyCreated();

            eventProcessor.OnEvent += callback;

            rw.EventRouter.AddProcessor(eventProcessor);

            return(eventProcessor);
        }
        public static MessageReplyCreated AddMessageReplyCreatedEventHandler <T>(
            this RoomWatcher <T> rw,
            Action <Chat.User, Chat.Message, Chat.Message> callback)
            where T : IWebSocket
        {
            callback.ThrowIfNull(nameof(callback));

            var eventProcessor = new MessageReplyCreated();

            eventProcessor.OnEvent += mr =>
            {
                Chat.User    author    = null;
                Chat.Message message   = null;
                Chat.Message targetMsg = null;

                var tasks = new[]
                {
                    Task.Run(() =>
                    {
                        author = new Chat.User(rw.Host, mr.AuthorId, rw.Auth);
                    }),
                    Task.Run(() =>
                    {
                        message = new Chat.Message(rw.Host, mr.MessageId, rw.Auth);
                    }),
                    Task.Run(() =>
                    {
                        targetMsg = new Chat.Message(rw.Host, mr.TargetMessageId, rw.Auth);
                    })
                };

                Task.WaitAll(tasks);

                callback(author, message, targetMsg);
            };

            rw.EventRouter.AddProcessor(eventProcessor);

            return(eventProcessor);
        }