CallTestStanzaHandler stanzaHandler = new CallTestStanzaHandler("iq");
namespaceHandlerDictionary.register(stanzaHandler);
StanzaBuilder stanzaBuilder = StanzaBuilder.createIQStanza(null, null, IQStanzaType.GET, "test");
// we set a different from user name 'ernest'!
stanzaBuilder.addAttribute("from", new EntityImpl("ernest", server.getDomain(), null).getFullQualifiedName());
stanzaBuilder.startInnerElement("query", "jabber:iq:roster").endInnerElement();
protocolWorker.processStanza(sessionContext.getServerRuntimeContext(), sessionContext, stanzaBuilder.build(),
sessionStateHolder);