return functionScoreQueryBuilder;
    }

    /**
     * Builds the OpenSearch rescorer for popular words.
     * @return The QueryRescorerBuilder instance.
     */
    protected QueryRescorerBuilder buildRescore() {
        return new QueryRescorerBuilder(
                QueryBuilders.functionScoreQuery(ScoreFunctionBuilders.randomFunction().seed(seed).setField("_seq_no"))).setQueryWeight(0)