收割机哪个性价比高？

private <T> Stream<T> asSlowPagedSource(long pageSize, List<T> things) {



    PageProducer<T> producer = (offset, limit) -> {



        try {

            Thread.sleep(5000L);

        } catch (InterruptedException e) {

            throw new RuntimeException(e);

        }



        int beginIndex = offset.intValue();

        int endIndex = Math.min(offset.intValue() + limit.intValue(), things.size());

        return new Page<T>().setTotalResults(things.size())

                .setPage(things.subList(beginIndex, endIndex));

    };



    return StreamSupport.stream(new PagingSourceSpliterator<>(pageSize, producer), true);

}