Call Backs Etc 请支持等
It then USES the handler for call-backs into your code as it processes the input document.
然后,在对输入文档进行处理的时候,它使用代码中的处理程序作为回调。
It evolves that support for these call-backs requires code in the entry point layer components as well.
因此,支持这些回调也需要入口点层组件中的代码。
Your handler code can make use of the information passed by the call-backs, but cannot affect the parsing (except by throwing an exception).
处理程序代码可以使用这些回调中传递的信息,但是不能影响解析过程(除了引发一个异常)。
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