protected abstract String getNamespace();
public void testDisco() throws Exception {
// add occupants to the room
Room room = conference.findOrCreateRoom(ROOM1_JID, "Room 1");
room.addOccupant(OCCUPANT1_JID, "nick");
room.addOccupant(OCCUPANT2_JID, "Nick 2");
StanzaBuilder request = StanzaBuilder.createIQStanza(OCCUPANT1_JID, new EntityImpl(ROOM1_JID, "Nick 2"), IQStanzaType.GET, "123");
request.startInnerElement("query", getNamespace()).endInnerElement();