}
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
SecurityContext securityContext = exchange.getAttachment(SecurityContext.ATTACHMENT_KEY);
securityContext.registerNotificationReceiver(NOTIFICATION_RECEIVER);
HttpSession session = servletContext.getSession(exchange, false);
// If there was no existing HttpSession then there could not be a cached AuthenticatedSession so don't bother setting
// the AuthenticatedSessionManager.
if (session != null) {