XMLSetStartDoctypeDeclHandler(XMLParser* parser, XMLStartDoctypeDeclHandler start);
XMLSetDoctypeDeclHandler(XMLParser* parser, XMLStartDoctypeDeclHandler start, XMLEndDoctypeDeclHandler end);
XMLSetStartDoctypeDeclHandler(XMLParser* parser, XMLStartDoctypeDeclHandler start);
XMLSetDoctypeDeclHandler(XMLParser* parser, XMLStartDoctypeDeclHandler start, XMLEndDoctypeDeclHandler end);