});
        }

        final CrawlingConfigHelper crawlingConfigHelper = ComponentUtil.getCrawlingConfigHelper();
        final BulkResponse response = searchEngineClient.addAll(fessConfig.getIndexDocumentUpdateIndex(), docList, (doc, builder) -> {
            if (doc.get(fessConfig.getIndexFieldConfigId()) instanceof final String configId) {

            }

            @Override
            public String getIndexFieldExpires() {
                return "expires";
            }

            @Override
            public String getIndexDocumentUpdateIndex() {
                return "fess.search";
            }
        });

        // Fast mock components
        ComponentUtil.register(new CrawlingInfoHelper(), "crawlingInfoHelper");

        }

        @Override
        public String getIndexDocumentSearchIndex() {
            return "fess.search";
        }

        @Override
        public String getIndexDocumentUpdateIndex() {
            return "fess.update";
        }

        @Override
        public String getIndexFieldDocId() {
            return "doc_id";
        }

        @Override

            }

            try {
                final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
                final String index = fessConfig.getIndexDocumentUpdateIndex();
                searchEngineClient.admin().indices().prepareRefresh(index).execute().actionGet();
                final long numOfDeleted = searchEngineClient.deleteByQuery(index, queryBuilder);

                final boolean isFessIndex = DOC_INDEX.equals(configIndex);
                final String indexName;
                if (isFessIndex) {
                    final boolean exists = existsIndex(fessConfig.getIndexDocumentUpdateIndex());
                    if (!exists) {
                        indexName = generateNewIndexName(configIndex);
                        createIndex(configIndex, indexName);

                                        upsertMap.put(fessConfig.getIndexFieldClickCount(), count);
                                        return new UpdateRequest(fessConfig.getIndexDocumentUpdateIndex(), id).script(script)
                                                .upsert(upsertMap);
                                    }
                                    return null;
                                })

     * The value is, e.g. fess.update <br>
     * comment: Index name for update documents.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexDocumentUpdateIndex();

    /**
     * Get the value for the key 'index.document.suggest.index'. <br>
     * The value is, e.g. fess <br>
     * comment: Index name for suggest documents.