// update pager
        BeanUtil.copyBeanToBean(crawlingInfoList, crawlingInfoPager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
        crawlingInfoPager.setPageNumberList(
                crawlingInfoList.pageRange(op -> op.rangeSize(fessConfig.getPagingPageRangeSizeAsInteger())).createPageNumberList());

        return crawlingInfoList;
    }

    public OptionalEntity<CrawlingInfo> getCrawlingInfo(final String id) {