}

    public void test_evaluate_withParams() {
        // Test implementation that returns a RescorerBuilder
        queryRescorer = new QueryRescorer() {
            @Override
            public RescorerBuilder<?> evaluate(Map<String, Object> params) {
                if (params != null && params.containsKey("test")) {
                    return createMockRescorerBuilder();
                }
                return null;

import java.util.Map;

import org.opensearch.search.rescore.RescorerBuilder;

/**
 * Interface for query rescoring implementations.
 */
public interface QueryRescorer {
    /**
     * Evaluates the rescorer with the given parameters.
     *
     * @param params the parameters for rescoring
     * @return the rescorer builder
     */
    RescorerBuilder<?> evaluate(final Map<String, Object> params);

import org.opensearch.search.rescore.RescorerBuilder;

/**
 * Learning to Rank query rescorer implementation.
 */
public class LtrQueryRescorer implements QueryRescorer {

    /**
     * Default constructor.
     */
    public LtrQueryRescorer() {
        // Default constructor
    }

    @Override
    public RescorerBuilder<?> evaluate(final Map<String, Object> params) {