code: private static void serializeReal(final Number real, final ContentHandler handler) throws SAXException {
      serializeElement("real", String.valueOf(real.doubleValue()), handler);
    }
docs: Serialize a Number as a real element.
  
  @param real
  number to serialize.
  @param handler
  destination of serialization events.
  @throws SAXException
  if exception during serialization.