std::chrono::time_of_day<Duration>::operator precision, std::chrono::time_of_day<Duration>::to_duration
From cppreference.com
                    
                                        
                    < cpp | chrono | time of day
                    
                                                            
                    | constexpr explicit operator precision() const noexcept; | (1) | |
| constexpr precision to_duration() const noexcept; | (2) | |
Returns the stored duration.
Return value
The stored duration.