code: private Object deserializeOCCColumn(Result result) {
      byte[] versionBytes = result.getValue(Constants.SYS_COL_FAMILY,
          Constants.VERSION_CHECK_COL_QUALIFIER);
      if (versionBytes == null) {
        return null;
      } else {
        return Bytes.toLong(versionBytes);
      }
    }
docs: Deserialize the OCC column value from the Result.
  
  @param result
  The HBase Result that represents a row in HBase.
  @return The deserialized OCC field value