public DefaultGridsetsEditor(final String id, final IModel<Set<String>> model) {
super(id, model);
selection = new Model<ArrayList<String>>(new ArrayList<String>(model.getObject()));
GridSetTableProvider provider = new GridSetTableProvider() {
private static final long serialVersionUID = 1L;
@Override
public List<GridSet> getItems() {
GridSetBroker gridSetBroker = GWC.get().getGridSetBroker();