code: public void enableTrigger(Trigger trigger) throws SchedulerException {
          trigger.setDisabled(false);
          triggerDao.updateTrigger(trigger);
          if (trigger instanceof ScheduledTrigger) {
              scheduleTrigger((ScheduledTrigger) trigger);
          }
      }
docs: Enables the {@code Trigger}
  @warn exception SchedulerException description missing
  
  @param trigger the {@code Trigger} to be enabled
  @throws SchedulerException