docs: @Override
      public int findColumn(String columnLabel) throws SQLException {
          checkClosed();
          try {
              return table.getColumnIndex(columnLabel) + 1;
          } catch (IllegalArgumentException iax) {
              throw SQLError.get(iax, SQLError.COLUMN_NOT_FOUND, columnLabel);
          } catch (Exception x) {
              throw SQLError.get(x);
          }
      }