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   $uri as xs:string?
) as xs:boolean?


Returns true if a given URI refers to a file which exists on the current application server. Only returns true if the modules on the App Server is set to file system; always returns false if you are using a database for your modules. false Returns false if the file does not exist. Returns the empty sequence if the URI is the empty sequence.

uri The URI to check. If the URI begins with a "/", it is relative to the root directory of the application server. Otherwise, it is relative to the current request URI.


=> true if test.xml exists in "apppages" sub-directory
   relative to the directory of the file containing the request.

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