public List<String> order(List<String> insertionOrder) {
      sort(insertionOrder, Collections.reverseOrder());
      return insertionOrder;
    }
  }

  public static class ImmutableSortedSetExplicitSuperclassComparatorGenerator
      extends TestStringSetGenerator {

    private static final Comparator<Comparable<?>> COMPARABLE_REVERSED = Collections.reverseOrder();

    @Override

    public List<String> order(List<String> insertionOrder) {
      sort(insertionOrder, Collections.reverseOrder());
      return insertionOrder;
    }
  }

  public static class ImmutableSortedSetExplicitSuperclassComparatorGenerator
      extends TestStringSetGenerator {

    private static final Comparator<Comparable<?>> COMPARABLE_REVERSED = Collections.reverseOrder();

    @Override

import com.google.common.collect.testing.google.SetGenerators.ImmutableSortedSetExplicitComparator;
import com.google.common.collect.testing.google.SetGenerators.ImmutableSortedSetExplicitSuperclassComparatorGenerator;
import com.google.common.collect.testing.google.SetGenerators.ImmutableSortedSetReversedOrderGenerator;
import com.google.common.collect.testing.google.SetGenerators.ImmutableSortedSetSubsetAsListGenerator;