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