The API method implementations are defined in the controller class as public instance methods.

API方法实现是作为公共实例方法定义在控制器类中的。

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Implement the API methods in the controller class as public instance methods.

在控制器类中实现作为公共实例方法的API方法。

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Implement the API methods in the service class as public instance methods.

在服务类中实现作为公共实例方法的API方法。

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