public void testStanzaError() throws ParsingException {
StanzaBuilder builder = new StanzaBuilder("iq");
builder.addAttribute("to", SERVER_JID);
builder.addAttribute("from", CLIENT_JID);
builder.startInnerElement("ping", NamespaceURIs.URN_XMPP_PING);
builder.endInnerElement();
Stanza request = builder.build();
IQStanza requestIq = new IQStanza(request);
Stanza errorReply = ServerErrorResponses.getStanzaError(StanzaErrorCondition.SERVICE_UNAVAILABLE, requestIq,