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尹旭莫名其妙地成为他的情敌，想要置于死地。One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.星战宇宙的首部真人剧，故事时间线设置在帝国陷落之后，一位孤胆枪手奋战于远离新共和国治理的银河偏远行星带。第二季中，我们的主角曼达洛人将继续与“尤达宝宝”一同在银河系内冒险，等待他们的将是更加危险的敌人。《绿箭侠》续订第7季。"So did there be any melee between you next? Or did the" dogs "break through the defense line at position 142?" I asked.