docs: public synchronized void setHoldability(
              int holdability) throws SQLException {
  
          checkClosed();
  
          switch (holdability) {
  
              case JDBCResultSet.HOLD_CURSORS_OVER_COMMIT :
              case JDBCResultSet.CLOSE_CURSORS_AT_COMMIT :
                  break;
              default :
                  throw Util.invalidArgument();
          }
          rsHoldability = holdability;
      }