public void isNoneOf(
      @Nullable Object first, @Nullable Object second, @Nullable Object @Nullable ... rest) {
    isNotIn(accumulate(first, second, rest));
  }
@Test
  public void isNoneOfNullFailure() {
    expectFailure.whenTesting().that((String) null).isNoneOf("a", "b", (String) null);
  }