VSL import.
class vtb::vsl::Descriptionclass vtb::vsl::Nameoperator<<(std::ostream & out, const Name & rhs) -> std::ostream &operator<<(std::ostream & out, const Description & rhs) -> std::ostream &operator>>(std::istream & in, Name & rhs) -> std::istream &operator>>(std::istream & in, Description & rhs) -> std::istream &to_string(const Description & rhs) -> const std::string &