`.../thirdparty/sol2/include/sol/optional_implementation.hpp:2194:10: error: no member named 'construct' in 'optional<type-parameter-0-0 &>'
 2194 |                         this->construct(std::forward<Args>(args)...);
      |                         ~~~~  ^

		template <class... Args>
		T& emplace(Args&&... args) noexcept {
			static_assert(std::is_constructible<T, Args&&...>::value, "T must be constructible with Args");

			*this = nullopt;
			this->construct(std::forward<Args>(args)...);
		}

	template <class T>
	class optional<T&> {