protected List<T> list() {
        List<T> items = new ArrayList<>();
        for (Iterator<String> iterator = map.keySet().iterator(); iterator.hasNext();) {
            items.addAll(map.get(iterator.next()).values());
        }
        return items;
    }
protected List<T> list() {
        List<T> items = new ArrayList<>();
        for (Iterator<String> iterator = map.keySet().iterator(); iterator.hasNext();) {
            items.addAll(map.get(iterator.next()).values());
        }
        return items;
    }
protected List < T > list ( ) { List < T > items = new ArrayList <> ( ) ; for ( Iterator < String > iterator = map . keySet ( ) . iterator ( ) ; iterator . hasNext ( ) ; ) { items . addAll ( map . get ( iterator . next ( ) ) . values ( ) ) ; } return items ; }
@warn method description missing

@return
@warn method description missing