docs: @Override
      public boolean requeue(IQueueMessage<ID, DATA> _msg) {
          IQueueMessage<ID, DATA> msg = _msg.clone();
          Date now = new Date();
          msg.incNumRequeues().setQueueTimestamp(now);
          try {
              return putToQueue(msg, true);
          } catch (RocksDBException e) {
              throw new QueueException(e);
          }
      }