@Override
  public byte[] contentHash(int recordId) throws IOException {
    long storageId = contentIdToStorageId(recordId);
    return contentStorage.read(storageId, buffer -> {
      byte[] cryptoHash = new byte[CONTENT_HASH_LENGTH];
      buffer.get(cryptoHash);
      return cryptoHash;
    });
  }
@Override
  public byte[] contentHash(int recordId)