System.out.println(">>> MediaCollectionImpl.putMedia id=" + id + ", contentType=" + contentType );
// Must responsd with success or not found as per Atom Pub spec (http://tools.ietf.org/html/rfc5023#section-9.6)
// Body is null.
if ( !id.endsWith( "0" ) )
throw new NotFoundException( "Media at id=" + id + " not found." );
// A true implementation would update the media in the media repository.
}