}

  public void testSkip_skipNoneList() {
    Collection<String> list = newArrayList("a", "b");
    assertEquals(newArrayList("a", "b"), newArrayList(skip(list, 0)));
  }

  public void testSkip_removal() {
    Collection<String> set = newHashSet("a", "b");
    Iterator<String> iterator = skip(set, 2).iterator();
    try {
      iterator.next();
    } catch (NoSuchElementException suppressed) {