assertNull(searchRenderData.getFacetResponse());

        // Test with FacetResponse object created from empty Aggregations
        List<Aggregation> aggregationList = new ArrayList<>();
        Aggregations aggregations = new Aggregations(aggregationList);
        FacetResponse facetResponse = new FacetResponse(aggregations);
        searchRenderData.setFacetResponse(facetResponse);

{"index":{"_index":"fess_config.scheduled_job","_id":"log_aggregator"}}

import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;
import org.opensearch.search.aggregations.BucketOrder;

public class FacetInfoTest extends UnitFessTestCase {

    private FacetInfo facetInfo;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

import org.opensearch.script.ScriptType;
import org.opensearch.search.SearchHit;
import org.opensearch.search.SearchHits;
import org.opensearch.search.aggregations.AggregationBuilders;
import org.opensearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
import org.opensearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.opensearch.search.collapse.CollapseBuilder;

    }

    @Override
    public CacheStats stats() {
      SimpleStatsCounter aggregator = new SimpleStatsCounter();
      aggregator.incrementBy(localCache.globalStatsCounter);
      for (Segment<K, V> segment : localCache.segments) {
        aggregator.incrementBy(segment.statsCounter);
      }
      return aggregator.snapshot();
    }

    @Override
    public void cleanUp() {

    }

    @Override
    public CacheStats stats() {
      SimpleStatsCounter aggregator = new SimpleStatsCounter();
      aggregator.incrementBy(localCache.globalStatsCounter);
      for (Segment<K, V> segment : localCache.segments) {
        aggregator.incrementBy(segment.statsCounter);
      }
      return aggregator.snapshot();
    }

    @Override
    public void cleanUp() {

- Generate fake.NewClientset which replace the deprecated NewSimpleClientset, for kube-aggregator and sample-apiserver ([#136537](https://github.com/kubernetes/kubernetes/pull/136537), [@soltysh](https://github.com/soltysh)) [SIG API Machinery]

- Replaced deprecated package `k8s.io/utils/pointer` with `k8s.io/utils/ptr` for the kube-aggregator apiregistration. ([#132701](https://github.com/kubernetes/kubernetes/pull/132701), [@PatrickLaabs](https://github.com/PatrickLaabs))