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      std::stop_source
       
      friend void swap( stop_source& lhs, stop_source& rhs ) noexcept;
      		(since C++20)

      Overloads the std::swap algorithm for std::stop_source. Exchanges the 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_source is an associated class of the arguments.

      Parameters

      lhs, rhs - stop_sources to swap

      Return value

      (none)