}

  private static class NonNavigableSortedSet extends ForwardingSortedSet<String> {
    private final SortedSet<String> delegate = Sets.newTreeSet();

    @Override
    protected SortedSet<String> delegate() {
      return delegate;
    }
  }

  public void testAsMapSorted() {
    SortedSet<String> strings = new NonNavigableSortedSet();
    Collections.addAll(strings, "one", "two", "three");

                  }

                  @Override
                  public SortedMap<String, Integer> create(Object... elements) {
                    SortedSet<String> set = new NonNavigableSortedSet();
                    for (Object e : elements) {
                      Entry<?, ?> entry = (Entry<?, ?>) e;
                      checkNotNull(entry.getValue());