XMPPVersion versionSent = new XMPPVersion(2, 0);
Stanza response = getVersionResponse(versionSent);
XMLElementVerifier responseVerifier = response.getVerifier();
assertTrue(responseVerifier.nameEquals("error"));
assertTrue("error", responseVerifier.subElementPresent(StreamErrorCondition.UNSUPPORTED_VERSION.value()));
}
protected Stanza getVersionResponse(XMPPVersion versionSent) {
Stanza stanza = new ServerResponses().getStreamOpener(true, testFrom, null, versionSent, null).build();