@Override
    public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
      if (columnIndex == 0) {
        I18nizedPropertyData<D> bean = myKeyValuePairs.get(rowIndex);
        myKeyValuePairs.set(rowIndex, bean.changeKey((String)aValue));
      }
    }
@Override
    public void setValueAt(Object aValue, int rowIndex, int columnIndex)