wordpress插件开发人员在管理面板中使用WP_List_Table类来构建
HTML表.
This class’s access is marked as private. That means it is not
intended for use by plugin and theme developers as it is subject to
change without warning in any future wordpress release. If you would
still like to make use of the class,you should make a copy to use and
distribute with your own project,or else use it at your own risk.