I've noted that I can't get an extension for application/xml from the metadata service. In looking into this, the implementation (specifically, in addCommonExtensions) does not have a mapping for application/xml. Any reason?
Also, maybe this could be externalized to an XML document (or whatever) to describe the media types and their extensions. By default this could be packaged in the org.restlet.jar file but could be overridden with a system property that points to a different location to load. --Alex Milowski
