}

  public void testGetLast_emptyIterable() {
    Set<String> set = newHashSet();
    assertThrows(NoSuchElementException.class, () -> Iterables.getLast(set));
  }

  public void testUnmodifiableIterable() {
    List<String> list = newArrayList("a", "b", "c");
    Iterable<String> iterable = Iterables.unmodifiableIterable(list);
    Iterator<String> iterator = iterable.iterator();
    iterator.next();