new TypeToken<List<String>[]>() {}.getSupertype(Iterable[].class));
  }

  private interface ListMap<K, V> extends Map<K, List<V>> {}

  public void testGetSupertype_fullyGenericType() {
    ParameterizedType expectedType =
        Types.newParameterizedType(
            Map.class,
            ListMap.class.getTypeParameters()[0],