The comprehension may also have if clauses, which filter in the
super().__init_subclass__()
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vivo 很清楚，想要真正成为既能记录生活、又能成为颇具生产力的创作工具，就不能光靠屏算法，踏踏实实地去啃关于光学物理、散热结构、工业标准的硬骨头，才是正道。
And one delightful discovery: Apple’s internal code references a Desctiptor (sic) in one of the class names. Even Apple engineers make typos in private APIs. :)