assertEquals(
        new TypeToken<StringForFirstTypeArg<?>>() {}, supertype.getSubtype(subtype.getRawType()));
  }

  private static class TwoTypeArgs<K, V> {
    class InnerType<K2, V2> {}
  }

  private static class StringForFirstTypeArg<V> extends TwoTypeArgs<String, V> {
    class StringInnerType<V2> extends InnerType<String, V2> {}
  }

    assertEquals(
        new TypeToken<StringForFirstTypeArg<?>>() {}, supertype.getSubtype(subtype.getRawType()));
  }

  private static class TwoTypeArgs<K, V> {
    class InnerType<K2, V2> {}
  }

  private static class StringForFirstTypeArg<V> extends TwoTypeArgs<String, V> {
    class StringInnerType<V2> extends InnerType<String, V2> {}
  }