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Next, you will write various state classes. The light object is passed into the constructor of the state class. The state object also needs to hold a reference to the light object in order to call the method in the light or directly operate the light object:Causes of DDOS Attacks and Defense Measures against Known AttacksBridging mode aims to decouple abstraction and implementation so that the two can change independently. That is to say, the bridging mode further abstracts the implementation details of the original base class into an implemented structure, and then transforms the original base class into an abstract hierarchical structure, thus realizing independent changes of the system in multiple dimensions. The structure diagram of the bridging mode is shown below.就连《寻秦记》到底写的是什么，也没有人能说得出来。先一步逃走的高官家眷，一个也没有走成，早被杨长帆伏兵擒住。大银幕上出现了一辆二手的廉价小轿车，车子缓缓行驶，最后停在一个豪华酒店的门前。，祖宗，少说两句吧……这样的时候