public boolean containsValue(V value)
public boolean containsValue(Object value)
    public boolean containsValue(V value)    {        boolean found = false;        Iterator<Collection<V>> it = map.values().iterator();        while ((! found) && it.hasNext())        {             Collection<V> values = it.next();            if (values.contains(value))                found = true;        }        return found;    }