private interface ListArrayIterable<T> extends Iterable<List<T>[]> {}

  private interface StringListArrayIterable extends ListIterable<String> {}

  public void testGetSupertype_withTypeVariable() {
    ParameterizedType expectedType =
        Types.newParameterizedType(
            Iterable.class,
            Types.newParameterizedType(List.class, ListIterable.class.getTypeParameters()[0]));