public ModelAdapter<Model, Item> add(List<Model> list) {
        List<Item> items = intercept(list);
        return addInternal(items);
    }
public ModelAdapter < Model , Item > add ( List < Model > list ) { List < Item > items = intercept ( list ) ; return addInternal ( items ) ; }
add a list of items to the end of the existing items

@param list the items to add