Class对象为您提供接入类元数据的反射的所有基本hook。
The class object gives you all the basic hooks for reflection access to the class metadata.
documentattributes类用于保存Document类元数据,比如文档名称、内容类型、语言等。
The DocumentAttributes class is used to keep the document class metadata such as the document name, content type, language, and others.
All right, they're not tuples, they're simply an instance with some structuring.
传入这些类的实例,好,他们并不是元组。
应用推荐