docs: public ResultSetMetaData getMetaData() throws SQLException {
  
          checkClosed();
  
          if (resultSetMetaData == null) {
              boolean isUpdatable = rsConcurrency == ResultSet.CONCUR_UPDATABLE;
  
              resultSetMetaData = new JDBCResultSetMetaData(resultMetaData,
                      isUpdatable, rsInsertability, connProperties);
          }
  
          return resultSetMetaData;
      }