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OCP (Open-Closed Principle) principle emphasizes that a software entity (class, function, module, etc.) should be open to extension and closed to modification. That is, every time there is a change, the behavior of the existing type should be enhanced by adding new code instead of modifying the original code.魏铁大声道：属下遵命。Article 8 [Performance of Supervision Agreements] The medical security administrative department of the people's government at or above the county level shall supervise the signing and performance of designated service agreements between agencies and designated medical institutions, and supervise the inspection and examination of designated medical institutions by agencies.说完撒腿就往前奔去。Every once in a while, he went to Seoul to ask his daughter for money to rent a house in Seoul.《开心超人联盟之星之力》由广东明星创意动画有限公司制作，已经在2020年2月全国国产电视动画片制作备案公示剧目公布，预计今年内上映。讲述了超人们在星际联盟的帮助下拯救伽罗的故事！