String scooterToString(Scooter s) { string r = " Scooter.Id: " + s.Id + " state: " + s.State; if (s.State == ScooterState.available) { r = r + " station: " + s.Station.Id; } if (s.State == ScooterState.inUse) { r = r + " by: " + s.lastRental().User.Name; } return(r); }