std::ranges::subrange<I,S,K>::end
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   constexpr S end() const;  | 
(since C++20) | |
Returns the sentinel indicating the end of the subrange.
Return value
end_.
Example
| This section is incomplete Reason: no example  | 
See also
|   obtains the iterator  (public member function)  | |
|    (C++11)(C++14)  | 
  returns an iterator to the end of a container or array  (function template)  | 
|   (C++20)  | 
 returns a sentinel indicating the end of a range (customization point object)  |