@Nonnull
    @SuppressWarnings("checkstyle:needbraces")
    public static <T> AggregateOperation1<T, PickAnyAccumulator<T>, T> pickAny() {
        return AggregateOperation
                .withCreate(PickAnyAccumulator<T>::new)
                .<T>andAccumulate(PickAnyAccumulator::accumulate)
                .andCombine(PickAnyAccumulator::combine)
                .andExportFinish(PickAnyAccumulator::get);
    }
@Test
    public void when_pickAny() {
        validateOpWithoutDeduct(pickAny(), PickAnyAccumulator::get, 1, 2, 1, 1, 1);
    }