genreStore.add(type("Symphonies"));
ListFilter genreFilter = new ListFilter("genre", genreStore);
genreFilter.setDisplayProperty("type");
filters.addFilter(nameFilter);
filters.addFilter(genreFilter);
filters.addFilter(authorFilter);
TreeGrid<ModelData> tree = new TreeGrid<ModelData>(store, cm);
tree.setBorders(true);
tree.getStyle().setLeafIcon(Resources.ICONS.music());