public async void GetCars()
{
var cars = await client.GetCarsAsync();
Cars.Clear();
foreach (var car in cars)
{
Car newCar = new Car(car.Id, car.Brand, car.Model, car.TotalCost, car.YearOfProduction, car.Mileage,
car.Fuel, car.CarType, car.Seats, car.Color, car.CarStatus);
Cars.Add(newCar);
}
}