public static void writeResponse(SessionContext sessionContext, Stanza responseStanza) {
sessionContext.getResponseWriter().write(responseStanza);
}
public static void handleProtocolError(ProtocolException protocolException, SessionContext sessionContext, Stanza receivedStanza) {
Stanza errorStanza = null;
if (protocolException != null) errorStanza = protocolException.getErrorStanza();
if (errorStanza == null) {
errorStanza = ServerErrorResponses.getInstance().getStreamError(StreamErrorCondition.BAD_FORMAT,
sessionContext.getXMLLang(),