public static <T, V, R extends MutableMultimap<V, T>> R groupBy(
            T[] array,
            Function<? super T, ? extends V> function,
            R target)
    {
        return InternalArrayIterate.groupBy(array, array.length, function, target);
    }
public static < T , V , R extends MutableMultimap < V , T > > R groupBy ( T [ ] array , Function < ? super T , ? extends V > function , R target ) { return InternalArrayIterate . groupBy ( array , array . length , function , target ) ; }
@see Iterate#groupBy(Iterable, Function, MutableMultimap)