List<String> list = newArrayList("a", "b", "c");
    Iterable<String> tail = skip(list, 2);
    list.subList(0, 2).clear();
    assertTrue(Iterables.isEmpty(tail));
  }

  public void testSkip_illegalArgument() {
    List<String> list = newArrayList("a", "b", "c");
    assertThrows(IllegalArgumentException.class, () -> skip(list, -1));
  }

  private void testGetOnAbc(Iterable<String> iterable) {
    try {