list.add("a");
    list.add("b");
    Iterator<String> iterator = list.iterator();
    assertEquals("b", get(iterator, 1));
    assertFalse(iterator.hasNext());
  }

  public void testGet_atSize() {
    List<String> list = new ArrayList<>();
    list.add("a");
    list.add("b");
    Iterator<String> iterator = list.iterator();
    assertThrows(IndexOutOfBoundsException.class, () -> get(iterator, 2));