装饰者模式,不该边原有的方法从而实现对于原方法修改
参见:https://www.iteye.com/blog/fishhappy365-484185
参见:https://blog.csdn.net/a491057947/article/details/48346951
参见:https://blog.csdn.net/linzhiqiang0316/article/details/89968339