Modifying a Document type to XML at the subscription end.

I am publishing (locally) an XML document after converting it into a Document type. Can someone tell me how to convert the Document type back into the XML format at the subscription end. I am using pub.flow.savePipelineToFile service to store document type in a local folder. What services are to be used next to convert it to XML?

Okā€¦just use the service xml:document to xml string and the published doc wil get subscribed