NamespaceContext 接口保存当前文档上下文中可用的前缀到名称空间的映射。

The NamespaceContext interface stores the prefix-to-namespace mapping that is available in the current document context.

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每当保存文档时刷新当前文档。

Refresh the current document any time the document is saved.

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还可以使用当前文档作为参数文档(如果您已保存了代理所要寻找的字段的话)。

It's also possible to use the current document as your parameter document (if you've saved it with the fields the agent looks for).

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