JSF框架控制器使用这个视图ID来为当前的视图查找组件。

The JSF framework controller USES the view ID to look up the components for the current view.

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这是在一个测试中查找组件最可靠的方式；它保证组件查找从不失败，即使 GUI 的布局在将来会改变。

This is the most reliable way to find components in a test; it guarantees that component lookup will never fail, even if the GUI's layout changes in the future.

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为了保持简单，我们查找了组件处理程序并将其转换为已知的实现类类型。

For simplicity here, we have looked up our component handler and then cast it to the implementation class type that we know.

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