https://blog.csdn.net/u011694328/article/details/52325442
https://www.lullabot.com/articles/using-the-template-method-pattern-in-drupal-8
据说是drupal 8 Plugin API的设计模式。
https://blog.csdn.net/u011694328/article/details/52325442
https://www.lullabot.com/articles/using-the-template-method-pattern-in-drupal-8
据说是drupal 8 Plugin API的设计模式。