CollectionFeature.GENERAL_PURPOSE,
                CollectionFeature.ALLOWS_NULL_VALUES)
            .createTestSuite());

    return suite;
  }

  @SuppressWarnings({"rawtypes", "unchecked"})
  public void testForwarding() {
    new ForwardingWrapperTester()
        .testForwarding(
            NavigableSet.class,
            new Function<NavigableSet, NavigableSet>() {
              @Override

    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {
        // We are careful to set up INSTANCE_OF to match each Predicate to its target Class.
        @SuppressWarnings("unchecked")
        T caught = (T) t;
        return caught;
      }
      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }

    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {
        // We are careful to set up INSTANCE_OF to match each Predicate to its target Class.
        @SuppressWarnings("unchecked")
        T caught = (T) t;
        return caught;
      }
      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }

     * @return true if the label exists, false otherwise
     */
    public static Boolean labelExists(final String value) {
        return LaRequestUtil.getOptionalRequest().map(req -> {
            @SuppressWarnings("unchecked")
            final Map<String, String> labelValueMap = (Map<String, String>) req.getAttribute(Constants.LABEL_VALUE_MAP);
            if (labelValueMap != null) {
                return labelValueMap.get(value) != null;

    // for use calling Collection.toArray later
    T[] emptyArray = newArray(strictlyOrderedElements, 0);

    // shoot me, but I didn't want to deal with wildcards through the whole test
    @SuppressWarnings("unchecked")
    Scenario<T> starter = new Scenario<>((Ordering<T>) ordering, list, emptyArray);
    verifyScenario(starter, 0);
  }

    // for use calling Collection.toArray later
    T[] emptyArray = newArray(strictlyOrderedElements, 0);

    // shoot me, but I didn't want to deal with wildcards through the whole test
    @SuppressWarnings("unchecked")
    Scenario<T> starter = new Scenario<>((Ordering<T>) ordering, list, emptyArray);
    verifyScenario(starter, 0);
  }

      throw new UnsupportedOperationException();
    }

    @SuppressWarnings("unchecked")
    @Override
    public boolean remove(@Nullable Object key, @Nullable Object value) {
      return get((K) key).remove(value);
    }

    @SuppressWarnings("unchecked")
    @Override
    public Collection<V2> removeAll(@Nullable Object key) {

      throw new UnsupportedOperationException();
    }

    @SuppressWarnings("unchecked")
    @Override
    public boolean remove(@Nullable Object key, @Nullable Object value) {
      return get((K) key).remove(value);
    }

    @SuppressWarnings("unchecked")
    @Override
    public Collection<V2> removeAll(@Nullable Object key) {

    }

    @Override
    public SampleElements<K> samples() {
      return samples;
    }

    @Override
    public Set<K> create(Object... elements) {
      @SuppressWarnings("unchecked")
      K[] keysArray = (K[]) elements;

      // Start with a suitably shaped collection of entries
      Collection<Entry<K, V>> originalEntries = mapGenerator.getSampleElements(elements.length);

            logger.debug("TYPES: Before transform:\n {}", sb);
        }
        root.accept(new TypeDeriverVisitor(registry));
        @SuppressWarnings("unchecked")
        Map<String, String> collectedProcessorTypes = (Map<String, String>) context.get(TypeCollector.CONTEXT_KEY);
        if (collectedProcessorTypes != null) {