code: @Override
      public byte[] serialize(CacheEntry ce) {
          try {
              byte[] data = doSerialize(ce);
              return data != null ? (compressor != null ? compressor.compress(data) : data) : null;
          } catch (Exception e) {
              LOGGER.error(e.getMessage(), e);
              return null;
          }
      }
docs: {@inheritDoc}