entry = iter.next();
    assertThat(entry.getKey()).isEqualTo("alpha");
    assertThat(entry.getValue()).isEqualTo("betical");
    assertFalse(iter.hasNext());
  }

  public void testLinkedHashMapGeneralizesTypes() {
    Map<String, Integer> original = new LinkedHashMap<>();
    original.put("a", 1);
    original.put("b", 2);
    original.put("c", 3);