code: public void pauseJob (@Nonnull final TriggerKey aTriggerKey)
    {
      ValueEnforcer.notNull (aTriggerKey, "TriggerKey");
      try
      {
        m_aScheduler.pauseTrigger (aTriggerKey);
        LOGGER.info ("Succesfully paused job with TriggerKey " + aTriggerKey.toString ());
      }
      catch (final SchedulerException ex)
      {
        LOGGER.error ("Failed to pause job with TriggerKey " + aTriggerKey.toString (), ex);
      }
    }
docs: Pause the job with the specified trigger key as returned from
  {@link #scheduleJob(String, JDK8TriggerBuilder, Class, Map)}.
  
  @param aTriggerKey
  Trigger key to use. May not be <code>null</code>.
  @see #resumeJob(TriggerKey)