我们可以利用两个方法中的任何一个在类上启动树遍历。

We can use either of two methods on the java.nio.Files class to start the tree traversal.

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启动树屋激光。

Activate the Treehouse laser.

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这在启动时可能和打印配置树（以及源文件的位置）一样简单，尽管这在长期运行的系统中很快就会产生变化。

This may be as simple as printing out the configuration tree (and source location(s)) at startup, although this can be lost quickly in long running systems.

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