public async void AddCar(Car car)
{
var mapper = new CarMapper();
var newCar = mapper.MapToServiceModel(car);
await client.AddCarAsync(newCar);
}
public async void UpdateCar(Car car)
{
CarMapper mapper = new CarMapper();
var uptadeCar = mapper.MapToServiceModel(car);
await client.UpdateCarAsync(uptadeCar);
client.Close();
}