kdelibs/kdeui/tests/proxymodeltestsuite/templates/datachanged.cpp

  {
    ModelDataChangeCommand dataChangeCommand(&rootModel);
    dataChangeCommand.setAncestorRowNumbers({{ event.rowAncestors }});
    dataChangeCommand.setStartRow({{ event.start }});
    dataChangeCommand.setEndRow({{ event.end }});
    dataChangeCommand.doCommand();
  }