synchronized (docList) {
                docList.add(ingest(paramMap, dataMap));
                final long contentSize = indexingHelper.calculateDocumentSize(dataMap);
                docList.addContentSize(contentSize);
                final long processingTime = systemHelper.getCurrentTimeAsLong() - startTime;
                docList.addProcessingTime(processingTime);

     *
     * @param searchEngineClient the search engine client to use for indexing
     * @param docList the list of documents to be indexed
     * @throws SearchEngineClientException if the bulk indexing operation fails
     */
    public void sendDocuments(final SearchEngineClient searchEngineClient, final DocList docList) {
        if (docList.isEmpty()) {
            return;
        }

                                MemoryUtil.byteCountToDisplaySize(contentSize), processingTime, docList.size(), docList.getContentSize());
                    }

                    if (docList.getContentSize() >= maxDocumentRequestSize) {
                        indexingHelper.sendDocuments(searchEngineClient, docList);
                    }
                    documentSize++;
                    if (logger.isDebugEnabled()) {

        final List<Map<String, Object>> docList =
                indexingHelper.getChildDocumentList(searchEngineClient, id, new String[] { fessConfig.getIndexFieldUrl() });
        if (docList.isEmpty()) {
            return null;
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Found documents: {}", docList);
        }

            final List<Map<String, Object>> docList = searchHelper.getDocumentListByDocIds(docIds, new String[] {
                    fessConfig.getIndexFieldUrl(), fessConfig.getIndexFieldDocId(), fessConfig.getIndexFieldFavoriteCount() },
                    OptionalThing.empty(), SearchRequestType.JSON);
            List<String> urlList = new ArrayList<>(docList.size());
            for (final Map<String, Object> doc : docList) {

            final List<Map<String, Object>> docList = results[i].getDocumentList();
            if (logger.isDebugEnabled()) {
                logger.debug("[{}] {} docs / {} docs.", i, docList.size(), results[i].getAllRecordCount());
            }
            for (int j = 0; j < docList.size(); j++) {
                final Map<String, Object> doc = docList.get(j);

        }
    }

    private static class TestIndexingHelper extends IndexingHelper {
        @Override
        public void sendDocuments(SearchEngineClient client, DocList docList) {
            docList.clear();
        }

        @Override
        public long calculateDocumentSize(Map<String, Object> map) {
            return 100L;
        }
    }

     *
     * @param index   the target index
     * @param docList list of documents to add
     * @param options callback for customizing index request options
     * @return the bulk response
     */
    public BulkResponse addAll(final String index, final List<Map<String, Object>> docList,
            final BiConsumer<Map<String, Object>, IndexRequestBuilder> options) {