实验性实验性添加一个当新聊天消息发送时会被调用的回调。
Adds a callback that will be called when new chat messages are sent.
无法在只读模式下调用此函数，详见 WorldBeforeEvents。
This function can be called in early-execution mode.
实验性移除一个当新聊天消息发送时会被调用的回调。
Removes a callback from being called when new chat messages are sent.
无法在只读模式下调用此函数，详见 WorldBeforeEvents。
This function can be called in early-execution mode.
管理与聊天消息发送相关的回调。
Manages callbacks that are connected to chat messages being sent.