private ListItem createForGroup(final ItemGroup<Object, Object> group) {
        return new ListItem(null, group,
                model.getGroupingOptions().getGroupDisplayIconMapper().apply(group),
    null, ListItemType.GROUPHEADER);
    }
This view displays and maintains a list of simple view items, mainly for (single or multiple)
item selection lists. It provides special support for grouping, filtering and "select all" for such
lists.
main/src/main/java/cgeo/geocaching/ui/SimpleItemListView.java