* the other entity jid
* @param order
* i din't read the spec... is that necessary?
*/
public void blockUserBasedOnJID(final String listName, final XmppURI uri, final int order) {
final IQ iq = new IQ(IQ.Type.set);
final XMLPacket list = iq.addQuery(XmppNamespaces.PRIVACY).addChild("list", null);
list.setAttribute("name", listName);
final XMLPacket item = list.addChild("item", null);
item.setAttribute("type", "jid");
item.setAttribute("value", uri.getJID().toString());
item.setAttribute("action", "deny");