1. 重新设计了Generate项目及相关特性的命名，避免与其他类型混淆。

2. 补充了部分注释。
3. 修改了删除容器节点时，容器内子节点未正确删除的问题。

Serein.Proto.WebSocket/Handle/WebSocketMsgContext.cs

@@ -19,8 +19,8 @@ namespace Serein.Proto.WebSocket.Handle
         public void Dispose()
         {
             MsgRequest = null;
-            MsgTheme = null;
-            MsgId = null;
+            MsgTheme = string.Empty; 
+            MsgId =  string.Empty; 
             MsgData = null;
             MsgData = null;
             _sendAsync = null;
@@ -42,25 +42,25 @@ namespace Serein.Proto.WebSocket.Handle
         /// <summary>
         /// 消息本体（IJsonToken）
         /// </summary>
-        public IJsonToken MsgRequest { get; set; }
+        public IJsonToken? MsgRequest { get; set; }
 
         /// <summary>
         /// 此次消息请求的主题
         /// </summary>
-        public string MsgTheme { get; set; }
+        public string MsgTheme { get; set; } = string.Empty;
 
         /// <summary>
         /// 此次消息附带的ID
         /// </summary>
-        public string MsgId { get; set; }
+        public string MsgId { get; set; } = string.Empty;
 
         /// <summary>
         /// 此次消息的数据
         /// </summary>
-        public IJsonToken MsgData { get; set; }
+        public IJsonToken? MsgData { get; set; }
 
 
-        private Func<string, Task> _sendAsync;
+        private Func<string, Task>? _sendAsync;
 
         /// <summary>
         /// 发送消息
@@ -69,6 +69,7 @@ namespace Serein.Proto.WebSocket.Handle
         /// <returns></returns>
         public async Task SendAsync(string msg)
         {
+            if (_sendAsync is null) return;
             await _sendAsync.Invoke(msg);
         }