@Override
      public @Nullable ListSeparator separatorFor(MyFontItem value) {
        if (getModel() instanceof MyModel m) {
          if (!m.myItems.isEmpty() && ContainerUtil.find(m.myItems, item -> item.myIsMonospaced) == value)
            return new ListSeparator(ApplicationBundle.message("settings.editor.font.monospaced"));
          if (!m.myItems.isEmpty() && ContainerUtil.find(m.myItems, item -> !item.myIsMonospaced && !(item instanceof MyNoFontItem)) == value)
            return new ListSeparator(ApplicationBundle.message("settings.editor.font.proportional"));
        }
        return null;
      }
@Override
      public @Nullable ListSeparator separatorFor(MyFontItem value)