@Override
 protected void doPost(HttpServletRequest request, HttpServletResponse response)
     throws ServletException, IOException {
   HttpSession session = request.getSession(false);
   if (session != null) {
     RAPSupport.setLoggedInUser(new UserPrincipal("none"));
     HttpSessionManager.removeStoredHttpSession(session.getId());
     invalidateCookies(request, response);
     redirectLoginPage(response);
     LOGGER.log(
         Level.INFO, TextUtils.merge("Logout from httpSessionId: {0} performed", session.getId()));
   }
 }