@SuppressWarnings("unchecked")
    Class<WillBeUnloadedException> shadowClass =
        (Class<WillBeUnloadedException>)
            Class.forName(WillBeUnloadedException.class.getName(), false, shadowLoader);
    assertNotSame(shadowClass, WillBeUnloadedException.class);
    getChecked(immediateFuture("foo"), shadowClass);
    return new WeakReference<>(shadowLoader);
  }