public void ChargeElectricVehicle() { const string k_EnterChargingTime = "Please enter desired charging time, in minutes:"; int amountOfMinutes; string licenseNumber = r_Ui.GetLicenseNumber(); bool vehicleExist = r_Garage.VehicleExistInGarage(licenseNumber); string errorMsg = string.Format(k_VehicleDoesntExist, licenseNumber, Environment.NewLine); if (vehicleExist) { r_Ui.PrintMessage(k_EnterChargingTime); amountOfMinutes = r_Ui.GetIntInput(); r_Garage.FillElectric(licenseNumber, amountOfMinutes); } else { throw new ArgumentException(errorMsg); } }