final SearchResponse searchResponse = client.prepareSearch(indexName)
                .setQuery(QueryBuilders.termQuery("hostname", hostname))
                .setSize(searchSize)
                .addSort("timestamp", SortOrder.ASC)
                .execute()
                .actionGet(fessConfig.getIndexSearchTimeout());

        final SearchHit[] hits = searchResponse.getHits().getHits();
        if (hits.length == 0) {

        // set query.
        final QueryBuilder q = buildQuery(query, fields);

        // set function score
        final QueryBuilder functionScoreQuery = buildFunctionScoreQuery(query, q);
        builder.addSort("_score", SortOrder.DESC);

        // set filter query.
        final List<QueryBuilder> filterList = new ArrayList<>(10);
        if (!tags.isEmpty()) {

         */
        protected void buildSort(final QueryContext queryContext, final QueryFieldConfig queryFieldConfig, final FessConfig fessConfig) {
            queryContext.sortBuilders().forEach(sortBuilder -> searchRequestBuilder.addSort(sortBuilder));
        }

        /**
         * Builds the rescorer configuration.
         *
         * @param queryHelper the query helper

    }

    // Test addSorts
    @Test
    public void test_addSorts() {
        queryContext = new QueryContext("test", false);
        assertFalse(queryContext.hasSorts());

        SortBuilder<?> sort1 = SortBuilders.fieldSort("field1");
        SortBuilder<?> sort2 = SortBuilders.fieldSort("field2");

        queryContext.addSorts(sort1, sort2);

    builder = builder.addPart(requestBody)
    builder = builder.addPart(headersOf(), requestBody)
    builder = builder.addPart(null, requestBody)
    builder = builder.addFormDataPart("", "")
    builder = builder.addFormDataPart("", "", requestBody)
    builder = builder.addFormDataPart("", null, requestBody)
    builder = builder.addPart(MultipartBody.Part.create(requestBody))

	public final fun addFormDataPart (Ljava/lang/String;Ljava/lang/String;Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Builder;
	public final fun addPart (Lokhttp3/Headers;Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Builder;
	public final fun addPart (Lokhttp3/MultipartBody$Part;)Lokhttp3/MultipartBody$Builder;
	public final fun addPart (Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Builder;
	public final fun build ()Lokhttp3/MultipartBody;

	public final fun addFormDataPart (Ljava/lang/String;Ljava/lang/String;Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Builder;
	public final fun addPart (Lokhttp3/Headers;Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Builder;
	public final fun addPart (Lokhttp3/MultipartBody$Part;)Lokhttp3/MultipartBody$Builder;
	public final fun addPart (Lokhttp3/RequestBody;)Lokhttp3/MultipartBody$Builder;
	public final fun build ()Lokhttp3/MultipartBody;