在我们当前的树访问者函数中可以轻松抽象这些函数，并支持预构建和自定义的迭代策略。

It is easy to abstract these functions in our current tree-visitor function and allow for pre-built and custom iteration strategies.

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许多其他标准扩展了此语言以处理不同的领域，例如安全性，同时，您还可以定义自己的自定义策略。

And while many additional standards expand this language to address different domains, like security, you can also define your own custom policies.

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此外还可以根据需要自定义或修改策略集。

Additionally policy sets can be customized or modified as required.

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