public final boolean isSupported(String feature,String version){
  return implementation.hasFeature(feature,version);
}

public final boolean isSupported ( String feature , String version ) { return implementation . hasFeature ( feature , version ) ; }
ask whether we support a given dom feature . in fact , we do not _fully_ support any dom feature - - we ' re a read - only subset - - so arguably we should always return false .
