docs: public void updateClob(int columnIndex,
                             java.sql.Clob x) throws SQLException {
  
          if (x instanceof JDBCClobClient) {
              throw Util.sqlException(ErrorCode.JDBC_INVALID_ARGUMENT,
                                      "invalid Clob");
          }
          startUpdate(columnIndex);
          preparedStatement.setClobParameter(columnIndex, x);
      }