code: public ResultSet getPrimaryKeys(final String catalog,
                                      final String schema,
                                      final String table)
          throws SQLException {
  
          return RowLists.rowList6(String.class, String.class, String.class, 
                                   String.class, Short.class, String.class).
              withLabel(1, "TABLE_CAT").
              withLabel(2, "TABLE_SCHEM").
              withLabel(3, "TABLE_NAME").
              withLabel(4, "COLUMN_NAME").
              withLabel(5, "KEY_SEQ").
              withLabel(6, "PK_NAME").
              resultSet();
  
      }
docs: {@inheritDoc}