@CanIgnoreReturnValue
  public final Ordered containsExactly(@Nullable Object @Nullable ... varargs) {
    List<@Nullable Object> expected =
        (varargs == null) ? newArrayList((@Nullable Object) null) : asList(varargs);
    return containsExactlyElementsIn(
        expected, varargs != null && varargs.length == 1 && varargs[0] instanceof Iterable);
  }
@Test
  public void iterableContainsExactlyWithNullOutOfOrder() {
    assertThat(asList(1, null, 3)).containsExactly(1, 3, (Integer) null);
  }