@Override
    public Object getValueAt(int rowIndex, int columnIndex) {
      I18nizedPropertyData<?> data = myKeyValuePairs.get(rowIndex);
      if (columnIndex == 0) {
        return data.markAsNonNls() ? "will be marked as NonNls" : data.key();
      }
      return data.value();
    }
@Override
    public Object getValueAt(int rowIndex, int columnIndex)