public void serialize(DBBroker broker, Receiver handler) {
try {
AttrList attribs = new AttrList();
if (event == XMLStreamReader.START_ELEMENT || event == XMLStreamReader.END_ELEMENT) {
String ev = event == XMLStreamReader.START_ELEMENT ? "start" : "end";
attribs.addAttribute(ATTR_EVENT, ev);
}
attribs.addAttribute(ATTR_REF, refChild.getNodeId().toString());
handler.startElement(ELEMENT_DELETE, attribs);
handler.endElement(ELEMENT_DELETE);
} catch (SAXException e) {