@Override
        public boolean processValues(XmlAttribute t,
                                     ProcessingContext context,
                                     PairProcessor<? super String, ? super ProcessingContext> processor) {
          return processor.process(t.getValue(), context);
        }
@Override
        public boolean processValues(XmlAttribute t,
                                     ProcessingContext context,
                                     PairProcessor<? super String, ? super ProcessingContext> processor)