text: /*
   * A test for attempt to send a mutable signal.
   */
  
  #include <so_5/all.hpp>
  
  #include <various_helpers_1/time_limited_execution.hpp>
  #include <various_helpers_1/ensure.hpp>
  
  #include <utest_helper_1/h/helper.hpp>
  
  using namespace std;
  
  class demo final : public so_5::agent_t
  {
  	struct hello final : public so_5::signal_t {};
  
  public :
  	demo( context_t ctx ) : so_5::agent_t(std::move(ctx))
  	{
  		so_subscribe_self().event( &demo::on_hello );
  	}
  
  private :
  	void on_hello( mutable_mhood_t<hello> ) {}
  };
  
  int
  main()
  {
  	return 0;
  }
  
  