* @return The QueryBuilder instance.
     * @deprecated Use {@link SuggestQueryBuilder#buildFilterQuery(String, List)} instead.
     */
    @Deprecated
    protected QueryBuilder buildFilterQuery(final String fieldName, final List<String> words) {
        return new SuggestQueryBuilder(readingConverter, normalizer, languages, prefixMatchWeight).buildFilterQuery(fieldName, words);
    }

    /**
     * Builds a function score query.

    // ============================================================
    // Tests for buildFilterQuery method
    // ============================================================

    @Test
    public void test_buildFilterQuery_singleWord() {
        List<String> words = Collections.singletonList("tag1");
        QueryBuilder result = request.buildFilterQuery("tags", words);
        assertNotNull(result);

    /**
     * Builds a filter query.
     * @param fieldName The field name.
     * @param words The words to filter by.
     * @return The QueryBuilder instance.
     */
    public QueryBuilder buildFilterQuery(final String fieldName, final List<String> words) {
        final BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery().minimumShouldMatch(1);