客户端初始化事件

@EventHandler
public void onStart(ClientInitializedEvent.Start event) {
    Player player = event.getPlayer();
    // 客户端开始初始化
}

@EventHandler
public void onEnd(ClientInitializedEvent.End event) {
    Player player = event.getPlayer();
    // 可以开始向客户端发送数据了
}