使用John Papa的AngularJS风格指南，什么是声明数据对象的正确方法?

Let's say that I have an AngularJS data service that makes a call to the server and returns an object that can be extended with additional methods. For example, assume the following function is part of an AngularJS service for something like NerdDinner.Let's say that I have an AngularJS data service