final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final LabelTypeHelper labelTypeHelper = ComponentUtil.getLabelTypeHelper();
        final LanguageHelper languageHelper = ComponentUtil.getLanguageHelper();

        final StringBuilder resultBuf = new StringBuilder();

        try {
            final long count = searchEngineClient.updateByQuery(fessConfig.getIndexDocumentUpdateIndex(), option -> {

        final Date now = systemHelper.getCurrentTime();
        final CrawlingInfoHelper crawlingInfoHelper = ComponentUtil.getCrawlingInfoHelper();
        final LanguageHelper languageHelper = ComponentUtil.getLanguageHelper();
        final List<Map<String, Object>> docList = body.documents.stream().map(doc -> {
            if (!doc.containsKey(indexFieldContentLength)) {
                long contentLength = 0;