libbinder_ndk: cleaner API for making SpAIBinder

        return std::static_pointer_cast<CHILD>(ref());

    }

    /**

     * Convenience method for making an object directly with a reference.

     */

    template<class T, class... Args>

    static std::shared_ptr<T> make(Args&&... args) {

        T* t = new T(std::forward<Args>(args)...);

        return t->template ref<T>();

    }

private:

    std::once_flag mFlagThis;

    std::weak_ptr<SharedRefBase> mThis;