code: @Override
      public void releaseAcquiredTrigger(final OperableTrigger trigger) {
          try {
              doWithLock(new LockCallbackWithoutResult() {
                  @Override
                  public Void doWithLock(JedisCommands jedis) throws JobPersistenceException {
                      storage.releaseAcquiredTrigger(trigger, jedis);
                      return null;
                  }
              }, "Could not release acquired trigger.");
          } catch (JobPersistenceException e) {
              logger.error("Could not release acquired trigger.", e);
          }
      }
docs: Inform the <code>JobStore</code> that the scheduler no longer plans to
  fire the given <code>Trigger</code>, that it had previously acquired
  (reserved).
  
  @param trigger the trigger to be released