class MultiMap extends HashMap<String, List<V>> {

    public boolean containsSimpleValue(V value) {
        for (List<V> vals : values()) {
            if ((vals.size() == 1) && vals.contains(value)) {
                return true;
            }
        }
        return false;
    }

    public  MultiMap();
    public  MultiMap(Map<String, List<V>> map);
    public  MultiMap(MultiMap<V> map);

}