First, create a class in the model explorer.

首先，在模型浏览器中创建一个类。

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To implement this listener class, we'll code an anonymous class in the main Explorer Window.

为了实现该侦听器类，我们将在主资源管理器窗口中编码一个匿名类。

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Discover the hierarchical tree structure classes by finding the class in the Model Explorer, double-click to open the class in the editor, and press F4 to open the hierarchy tree.

通过寻找模型搜索器中的类，找出等级树状结构类，双击打开编辑器中的类，按下f 4以打开等级树。

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In response to the revelation that Google bypassed cookie blocking features on browsers such as Safari and Internet Explorer, enterprising lawyers have filed consumer class actions alleging that the practice constitutes illegal wiretapping.

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