docs: private Grid makeStylePanel() {
      for (Entry<String, Integer> item : stylesMap.entrySet()) {
        styles.insertItem(item.getKey(), item.getValue());
      }
      final Grid grid = new Grid(5, 3);
      grid.setText(0, 1, "Smooth");
      grid.setWidget(0, 2, smooth);
      grid.setText(1, 1, "Style");
      grid.setWidget(1, 2, styles);
      return grid;
    }