/** Match a single media type against a header string */
public static String match(String headerString, String mediaRangeStr)
{
AcceptList l = new AcceptList(headerString) ;
MediaRange aItem = new MediaRange(mediaRangeStr) ; // MediaType
MediaType m = l.match(aItem) ;
if ( m == null )
return null ;
return m.toHeaderString() ;
}