code: private void useDefaultLogoutMsg(HttpServletResponse res) {
          try {
              PrintWriter pw = res.getWriter();
              pw.println(DEFAULT_LOGOUT_MSG);
          } catch (IOException e) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
                  Tr.debug(tc, e.getMessage());
          }
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              Tr.debug(tc, "No logoutExitPage specified");
      }
docs: Display the default logout message.
  
  @param res