code: public void save(final XmlWriter w) throws KNXMLException
  	{
  		w.writeStartElement(TAG_ADDRESS);
  		w.writeAttribute(ATTR_TYPE, getType());
  		w.writeCharacters(toString());
  		w.writeEndElement();
  	}
docs: Writes the KNX address in XML format to the supplied writer.
  
  @param w a XML writer
  @throws KNXMLException on output error