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

  public void testGetSubtype_toWildcard() {
    class TwoTypeArgs<K, V> {}
    class StringForFirstTypeArg<V> extends TwoTypeArgs<String, V> {}
    TypeToken<TwoTypeArgs<?, ?>> supertype = new TypeToken<TwoTypeArgs<?, ?>>() {};
    TypeToken<StringForFirstTypeArg<String>> subtype =
        new TypeToken<StringForFirstTypeArg<String>>() {};