docs: @Override
      public void remove(final long index) {
          PoolUtils.doWorkInPoolNicely(this.jedisPool, new PoolWork<Jedis, Void>() {
              /**
               * {@inheritDoc}
               */
              @Override
              public Void doWork(final Jedis jedis) throws Exception {
                  final String failedKey = key(FAILED);
                  final String randId = UUID.randomUUID().toString();
                  jedis.lset(failedKey, index, randId);
                  jedis.lrem(failedKey, 1, randId);
                  return null;
              }
          });
      }