*/
  final ImmutableList<TypeToken<? super T>> getGenericInterfaces() {
    if (runtimeType instanceof TypeVariable) {
      return boundsAsInterfaces(((TypeVariable<?>) runtimeType).getBounds());
    }
    if (runtimeType instanceof WildcardType) {
      return boundsAsInterfaces(((WildcardType) runtimeType).getUpperBounds());
    }
    ImmutableList.Builder<TypeToken<? super T>> builder = ImmutableList.builder();