- friend std::ostream& operator<<(std::ostream& _os, const VRKey &_val);
- friend std::istream& operator>>(std::istream& _is, VRKey &_val);
+ friend std::ostream &operator<<(std::ostream &_os, const VRKey &_val);
+ friend std::istream &operator>>(std::istream &_is, VRKey &_val);