request:get-uploaded-file-data($upload-param-name as xs:string) xs:base64Binary?
Retrieve the base64 encoded data where the file part of a multi-part request has been stored. Returns the empty sequence if the request is not a multi-part request or the parameter name does not point to a file part.
$upload-param-name
The parameter name
Returns the base64 encoded data from the uploaded file
