docs: public final static <T> Stream<Seq<T>> groupedStatefullyUntil(final Stream<T> stream,
              final BiPredicate<Seq<? super T>, ? super T> predicate) {
          return StreamSupport.stream(new GroupedStatefullySpliterator<>(stream.spliterator(),()->Seq.of(),Function.identity(),predicate.negate()),stream.isParallel());
      }