code: public synchronized void shutDown() {
  
          m_adminCms = null;
  
          if (CmsLog.INIT.isInfoEnabled()) {
              CmsLog.INIT.info(Messages.get().getBundle().key(Messages.INIT_SHUTDOWN_1, this.getClass().getName()));
          }
  
          if (m_scheduler != null) {
              try {
                  m_scheduler.shutdown();
              } catch (SchedulerException e) {
                  LOG.error(Messages.get().getBundle().key(Messages.LOG_SHUTDOWN_ERROR_0));
              }
          }
  
          m_scheduler = null;
      }
docs: Shuts down this instance of the OpenCms scheduler manager.<p>