docs: @Override
      public Blob loadForID(String id) throws SQLException {
          Connection c = dataSource.getConnection();
          PreparedStatement preparedStatement = c.prepareStatement(loadStatement());
          preparedStatement.setString(1, id);
          ResultSet r = preparedStatement.executeQuery();
          if (r.wasNull() || !r.next()) {
              return null;
          } else {
              Blob first = r.getBlob(2);
              return first;
          }
  
  
      }