* @param functionScoreQuery Consumer that configures the function score filters.
     */
    public void addFunctionScore(final Consumer<List<FilterFunctionBuilder>> functionScoreQuery) {
        final List<FilterFunctionBuilder> list = new ArrayList<>();
        functionScoreQuery.accept(list);

        float titleBoost = 0.5f;
        float contentBoost = 0.05f;

        assertQuery(functionScoreQuery(simpleQuery("QUERY", titleBoost, contentBoost)), //
                Map.of("_default", List.of("QUERY")), //
                Set.of("QUERY"), //
                buildQuery("QUERY"));
        assertQuery(functionScoreQuery(simpleQuery("QUERY", titleBoost, contentBoost)), //
                Map.of("_default", List.of("QUERY")), //

                    .seed(ComponentUtil.getSystemHelper().getCurrentTimeAsLong())
                    .setField(fessConfig.getIndexFieldDocId())));
            reader.setQuery(QueryBuilders
                    .functionScoreQuery(QueryBuilders.matchAllQuery(),
                            flist.toArray(new FunctionScoreQueryBuilder.FilterFunctionBuilder[flist.size()]))
                    .boostMode(CombineFunction.MULTIPLY));