code: @PostConstruct
      public void initialize() throws SchedulerException {
          if (initialized.compareAndSet(false, true)) {
              try {
                  this.scheduler.startScheduler(threadPoolSize);
              } catch (org.quartz.SchedulerException se) {
                  throw new SchedulerException("Exception occurred while initializing TriggerOperator", se);
              }
              for (Iterator<Trigger> iterator = getTriggers().iterator(); iterator.hasNext(); ) {
                  Trigger trigger = iterator.next();
                  if (!trigger.isDisabled() && trigger instanceof ScheduledTrigger) {
                      scheduleTrigger((ScheduledTrigger) trigger);
                  }
              }
          }
      }
docs: Users of this class must call {@code initialize()} before they use this class.
  @warn exception SchedulerException description missing
  
  @throws SchedulerException