List<Feature<?>> features = new ArrayList<>();
    features.add(NoRecurse.SUBMAP);
    features.addAll(parentBuilder.getFeatures());

    return newBuilderUsing(delegate, to, from)
        .named(parentBuilder.getName() + " subMap " + from + "-" + to)
        .withFeatures(features)
        .suppressing(parentBuilder.getSuppressedTests())

      suppressing.add(CollectionAddTester.getAddNullUnsupportedMethod());
      suppressing.add(CollectionAddAllTester.getAddAllNullUnsupportedMethod());
    }

    return newBuilderUsing(delegate, to, from)
        .named(parentBuilder.getName() + " subSet " + from + "-" + to)
        .withFeatures(features)
        .suppressing(suppressing)
        .withSetUp(parentBuilder.getSetUp())

      suppressing.add(CollectionAddTester.getAddNullUnsupportedMethod());
      suppressing.add(CollectionAddAllTester.getAddAllNullUnsupportedMethod());
    }

    return newBuilderUsing(delegate, to, from)
        .named(parentBuilder.getName() + " subSet " + from + "-" + to)
        .withFeatures(features)
        .suppressing(suppressing)
        .withSetUp(parentBuilder.getSetUp())

    List<Feature<?>> features = new ArrayList<>();
    features.add(NoRecurse.SUBMAP);
    features.addAll(parentBuilder.getFeatures());

    return newBuilderUsing(delegate, to, from)
        .named(parentBuilder.getName() + " subMap " + from + "-" + to)
        .withFeatures(features)
        .suppressing(parentBuilder.getSuppressedTests())

      } else {
        return (NavigableSet<E>) super.createSubSet(set, firstExclusive, lastExclusive);
      }
    }
  }

  @Override
  public NavigableSetTestSuiteBuilder<E> newBuilderUsing(
      TestSortedSetGenerator<E> delegate, Bound to, Bound from) {
    return using(new NavigableSetSubsetTestSetGenerator<E>(delegate, to, from));
  }

      } else {
        return (NavigableSet<E>) super.createSubSet(set, firstExclusive, lastExclusive);
      }
    }
  }

  @Override
  public NavigableSetTestSuiteBuilder<E> newBuilderUsing(
      TestSortedSetGenerator<E> delegate, Bound to, Bound from) {
    return using(new NavigableSetSubsetTestSetGenerator<E>(delegate, to, from));
  }

      } else {
        return (NavigableMap<K, V>) super.createSubMap(map, firstExclusive, lastExclusive);
      }
    }
  }

  @Override
  public NavigableMapTestSuiteBuilder<K, V> newBuilderUsing(
      TestSortedMapGenerator<K, V> delegate, Bound to, Bound from) {
    return subSuiteUsing(new NavigableMapSubmapTestMapGenerator<K, V>(delegate, to, from));
  }

      } else {
        return (NavigableMap<K, V>) super.createSubMap(map, firstExclusive, lastExclusive);
      }
    }
  }

  @Override
  public NavigableMapTestSuiteBuilder<K, V> newBuilderUsing(
      TestSortedMapGenerator<K, V> delegate, Bound to, Bound from) {
    return subSuiteUsing(new NavigableMapSubmapTestMapGenerator<K, V>(delegate, to, from));
  }