queryRequestBuilder.setQuery(QueryBuilders.matchAllQuery());
            final TermsAggregationBuilder termsBuilder = AggregationBuilders.terms(fessConfig.getIndexFieldSegment())
                    .field(fessConfig.getIndexFieldSegment())
                    .size(maxSessionIdsInList)
                    .order(BucketOrder.key(false));
            queryRequestBuilder.addAggregation(termsBuilder);

            public String getIndexFieldLabel() {
                return baseConfig.getIndexFieldLabel();
            }

            @Override
            public String getIndexFieldSegment() {
                return baseConfig.getIndexFieldSegment();
            }

            @Override
            public String[] getQueryAdditionalResponseFields(String... fields) {

    public void test_indexFieldAnchor() {
        assertEquals("anchor", fessConfig.getIndexFieldAnchor());
    }

    public void test_indexFieldSegment() {
        assertEquals("segment", fessConfig.getIndexFieldSegment());
    }

    public void test_indexFieldRole() {
        assertEquals("role", fessConfig.getIndexFieldRole());
    }

    public void test_indexFieldBoost() {

            }

            @Override
            public String getIndexFieldLabel() {
                return "label";
            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override
            public String get(String key) {
                // Return empty string instead of null
                return "";

            }

            @Override
            public String getIndexFieldLabel() {
                return "label";
            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

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

            }

            @Override
            public String getIndexFieldLabel() {
                return "label";
            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override
            public String getIndexFieldAnchor() {
                return "anchor";
            }

        if (documentExpires != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldExpires(), documentExpires);
        }
        // segment
        putResultDataBody(dataMap, fessConfig.getIndexFieldSegment(), sessionId);
        // content
        final StringBuilder buf = new StringBuilder(content.length() + 1000);
        if (fessConfig.isCrawlerDocumentFileAppendBodyContent()) {
            buf.append(content);

                    .must(QueryBuilders.termQuery(fessConfig.getIndexFieldConfigId(), dataConfig.getConfigId()))//
                    .mustNot(QueryBuilders.termQuery(fessConfig.getIndexFieldSegment(), sessionId));
            if (!Constants.FALSE.equals(initParamMap.getAsString(KEEP_EXPIRES_DOCS))) {
                final QueryBuilder expiresCheckQuery = QueryBuilders.boolQuery()//

                        new String[] { fessConfig.getIndexFieldId(), fessConfig.getIndexFieldLastModified(),
                                fessConfig.getIndexFieldAnchor(), fessConfig.getIndexFieldSegment(), fessConfig.getIndexFieldExpires(),
                                fessConfig.getIndexFieldClickCount(), fessConfig.getIndexFieldFavoriteCount() });
                if (document == null) {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final QueryBuilder queryBuilder = QueryBuilders.termQuery(fessConfig.getIndexFieldSegment(), sessionId);
        return deleteByQueryBuilder(searchEngineClient, index, queryBuilder);
    }

    /**
     * Deletes all documents associated with the specified configuration ID.
     *