parentBuilder) {
    List<TestSuite> derivedSuites = new ArrayList<>(super.createDerivedSuites(parentBuilder));

    derivedSuites.add(createElementSetTestSuite(parentBuilder));

    if (!parentBuilder.getFeatures().contains(NoRecurse.NO_ENTRY_SET)) {
      derivedSuites.add(
          SetTestSuiteBuilder.using(new EntrySetGenerator<E>(parentBuilder.getSubjectGenerator()))

          parentBuilder) {
    List<TestSuite> derivedSuites = new ArrayList<>(super.createDerivedSuites(parentBuilder));

    derivedSuites.add(createElementSetTestSuite(parentBuilder));

    if (!parentBuilder.getFeatures().contains(NoRecurse.NO_ENTRY_SET)) {
      derivedSuites.add(
          SetTestSuiteBuilder.using(new EntrySetGenerator<E>(parentBuilder.getSubjectGenerator()))

    List<Class<? extends AbstractTester>> testers = copyToList(super.getTesters());
    testers.add(MultisetNavigationTester.class);
    return testers;
  }

  @Override
  TestSuite createElementSetTestSuite(
      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<E>, E>>
          parentBuilder) {
    // TODO(lowasser): make a SortedElementSetGenerator