void use_event_dispatcher(Msp::IO::EventDispatcher &);
private:
void incoming_connection();
void train_added(Train &);
void train_speed_changed(const Train &, unsigned);
void use_event_dispatcher(Msp::IO::EventDispatcher &);
private:
void incoming_connection();
void train_added(Train &);
void train_speed_changed(const Train &, unsigned);