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This request mapper's configuration is implemented as a reloadable XML resource, which means that the XML content can be supplied inline, in a local file, or a remote file, and can be monitored for changes and reloaded on the fly. The root of the XML in any of those cases MUST be a <RequestMap> element, either as a child element in an existing file or the root of a different file.
Note that the actual settings themselves that the RequestMapper supports aren't documented here because they don't show up in this element, but rather the <RequestMap> element and its various children.
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