testers.add(NavigableMapNavigationTester.class);
    return testers;
  }

  @Override
  protected List<TestSuite> createDerivedSuites(
      FeatureSpecificTestSuiteBuilder<
              ?, ? extends OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>>>
          parentBuilder) {
    List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);

    if (!parentBuilder.getFeatures().contains(NoRecurse.DESCENDING)) {

    builder.usingGenerator(generator);
    return builder;
  }

  @Override
  protected List<TestSuite> createDerivedSuites(
      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<E>, E>>
          parentBuilder) {
    List<TestSuite> derivedSuites = new ArrayList<>(super.createDerivedSuites(parentBuilder));

    if (!parentBuilder.getFeatures().contains(SUBSET_VIEW)) {

      withFeatures(features);
    }
    return super.createTestSuite();
  }

  @Override
  protected List<TestSuite> createDerivedSuites(
      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<E>, E>>
          parentBuilder) {
    List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);

    if (!parentBuilder.getFeatures().contains(CollectionFeature.SUBSET_VIEW)) {

      withFeatures(features);
    }
    return super.createTestSuite();
  }

  @Override
  protected List<TestSuite> createDerivedSuites(
      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<E>, E>>
          parentBuilder) {
    List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);

    if (!parentBuilder.getFeatures().contains(CollectionFeature.SUBSET_VIEW)) {

    }
    return derivedFeatures;
  }

  private static final class ReserializedMapGenerator<K, V> implements TestMapGenerator<K, V> {
    private final OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>> mapGenerator;

    ReserializedMapGenerator(OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>> mapGenerator) {
      this.mapGenerator = mapGenerator;
    }

    @Override
    public SampleElements<Entry<K, V>> samples() {

import com.google.common.collect.testing.FeatureSpecificTestSuiteBuilder;
import com.google.common.collect.testing.MapTestSuiteBuilder;
import com.google.common.collect.testing.OneSizeTestContainerGenerator;
import com.google.common.collect.testing.PerCollectionSizeTestSuiteBuilder;
import com.google.common.collect.testing.SetTestSuiteBuilder;
import com.google.common.collect.testing.features.CollectionFeature;

/**
 * Generator for collection of a particular size.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@NullMarked
public final class OneSizeGenerator<T, E extends @Nullable Object>
    implements OneSizeTestContainerGenerator<T, E> {
  private final TestContainerGenerator<T, E> generator;
  private final CollectionSize collectionSize;

  public OneSizeGenerator(TestContainerGenerator<T, E> generator, CollectionSize collectionSize) {

import com.google.common.collect.SortedMultiset;
import com.google.common.collect.testing.AbstractTester;
import com.google.common.collect.testing.FeatureSpecificTestSuiteBuilder;
import com.google.common.collect.testing.OneSizeTestContainerGenerator;
import com.google.common.collect.testing.SampleElements;
import com.google.common.collect.testing.SetTestSuiteBuilder;
import com.google.common.collect.testing.features.Feature;

        oneSizeSuite.addTest(derivedSuite);
      }
    }
    return suite;
  }

  protected List<TestSuite> createDerivedSuites(
      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<T, E>>
          parentBuilder) {
    return new ArrayList<>();
  }

  /** Builds a test suite for one particular {@link CollectionSize}. */
  private static final class OneSizeTestSuiteBuilder<T, E>

/**
 * Generator for collection of a particular size.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@NullMarked
public final class OneSizeGenerator<T, E extends @Nullable Object>
    implements OneSizeTestContainerGenerator<T, E> {
  private final TestContainerGenerator<T, E> generator;
  private final CollectionSize collectionSize;

  public OneSizeGenerator(TestContainerGenerator<T, E> generator, CollectionSize collectionSize) {