可以用一个内容处理程序来处理这两种情况，但每次解析器调用处理程序时，都需要进行一次检查，以查看到底是哪一种情况需要被处理。

You can have one content handler that handles both cases, but this requires a check to see which case needs to be handled each time the parser invokes the handler.

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read _ file函数使用stat函数调用检查文件的修改时间，只有在上一次装载之后修改了文件的情况下，它才重新读取文件的内容。

The read_file function USES the stat function call to check the modification time of the file, only re-reading the contents of the file if it changed since the last time the file was loaded.

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在某些情况下，可能希望更仔细地检查资产，例如查看它的关系或内容。

In some cases, you might want to review an asset more closely to examine its relationships or its content for example.

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