final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return searchEngineClient.getDocumentList(fessConfig.getIndexDocumentSearchIndex(),
                searchRequestBuilder -> SearchConditionBuilder
                        .builder(searchRequestBuilder.setPreference(Constants.SEARCH_PREFERENCE_LOCAL))

    protected UpdateRequestBuilder createUpdateRequestBuilder() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return ComponentUtil.getSearchEngineClient().prepareUpdate().setIndex(fessConfig.getIndexDocumentSearchIndex());
    }

    /**
     * Flushes the bulk request builder.
     */
    protected void flush() {
        if (bulkRequestBuilder != null) {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return ComponentUtil.getSearchEngineClient()
                .<Map<String, Object>> scrollSearch(fessConfig.getIndexDocumentSearchIndex(), searchRequestBuilder -> {
                    final QueryHelper queryHelper = ComponentUtil.getQueryHelper();
                    final QueryFieldConfig queryFieldConfig = ComponentUtil.getQueryFieldConfig();

            final OptionalThing<FessUserBean> userBean) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return ComponentUtil.getSearchEngineClient()
                .search(fessConfig.getIndexDocumentSearchIndex(), createSearchCondition(query, params, userBean),
                        (searchRequestBuilder, execTime, searchResponse) -> {
                            searchResponse.ifPresent(r -> {

        }

        @Override
        public String getIndexFieldClickCount() {
            return "click_count";
        }

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

        @Override
        public Integer getPageElevateWordMaxFetchSizeAsInteger() {
            return 1000;
        }

        @Override

    public List<Map<String, String>> getSessionIdList(final SearchEngineClient searchEngineClient) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return searchEngineClient.search(fessConfig.getIndexDocumentSearchIndex(), queryRequestBuilder -> {
            queryRequestBuilder.setQuery(QueryBuilders.matchAllQuery());
            final TermsAggregationBuilder termsBuilder = AggregationBuilders.terms(fessConfig.getIndexFieldSegment())

        suggester.indexer().indexFromDocument(() -> {
            final ESSourceReader reader = new ESSourceReader(ComponentUtil.getSearchEngineClient(), suggester.settings(),
                    fessConfig.getIndexDocumentSearchIndex());
            reader.setScrollSize(fessConfig.getSuggestSourceReaderScrollSizeAsInteger());
            reader.setLimitDocNumPercentage(fessConfig.getSuggestUpdateContentsLimitNumPercentage());

            return true;
        }

        @Override
        public boolean isBrowserLocaleForSearchUsed() {
            return true;
        }

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

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

        @Override

        testSystemHelper = new TestSystemHelper();
        ComponentUtil.register(testSystemHelper, "systemHelper");

        testFessConfig = new TestFessConfig() {
            @Override
            public String getIndexDocumentSearchIndex() {
                return "fess.search";
            }
        };
        ComponentUtil.setFessConfig(testFessConfig);

        testServletContext = new TestServletContext();

            if (!deleteFileMap.isEmpty()) {
                final String docIdField = fessConfig.getIndexFieldDocId();
                searchEngineClient.getDocumentList(fessConfig.getIndexDocumentSearchIndex(), searchRequestBuilder -> {
                    searchRequestBuilder.setQuery(
                            QueryBuilders.termsQuery(docIdField, deleteFileMap.keySet().toArray(new String[deleteFileMap.size()])));