code: public void standby ()
    {
      m_aResources.getJobStore ().schedulerPaused ();
      m_aSchedThread.togglePause (true);
      LOGGER.info ("Scheduler " + m_aResources.getUniqueIdentifier () + " paused.");
      notifySchedulerListenersInStandbyMode ();
    }
docs: <p>
  Temporarily halts the <code>QuartzScheduler</code>'s firing of
  <code>{@link com.helger.quartz.ITrigger}s</code>.
  </p>
  <p>
  The scheduler is not destroyed, and can be re-started at any time.
  </p>