I have got a grid with grouping possibility. The grouping column is defined as follows:

descriptionColumn = new ColumnConfig<>(elementProps.description());
I wanted to set a custom text in the grouping header but somehow only the content of the grouping column is changed when I override the render method.

descriptionColumn.setCell(new AbstractCell<String>() {
                                    public void render(Context context, String value, SafeHtmlBuilder sb) {
                                                MyDto dto = store.get(context.getIndex());
                                                if (dto != null) {
                                                           String summary = StringUtils.provideSummary(dto);

Any ideas how I can set the same text in the grouping header as in the grouping column?