@Override
  @Test
  public void removeIf() {
    super.removeIf();

    MutableList<Integer> objects = this.newWith(1, 2, 3, null);
    objects.removeIf(Predicates.isNull());
    Verify.assertSize(3, objects);
    Verify.assertContainsAll(objects, 1, 2, 3);
  }