swap(std::stop_token)
From cppreference.com
                    
                                        
                    < cpp | thread | stop token
                    
                                                            
                    |   friend void swap( stop_token& lhs, stop_token& rhs ) noexcept;  | 
(since C++20) | |
Overloads the std::swap algorithm for std::stop_token. Exchanges the associated stop-state of lhs with that of rhs. Effectively calls lhs.swap(rhs).
This function is not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::stop_token is an associated class of the arguments.
Parameters
| lhs, rhs | - |  stop_tokens to swap
 | 
Return value
(none)