}

  public void testGetLast_iterable() {
    Set<String> set = ImmutableSet.of("a", "b", "c");
    assertEquals("c", Iterables.getLast(set));
  }

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

  public void testUnmodifiableIterable() {