private void FillCarModel()
{
var repository = new CarModelRepository();
repository.AddIfNotExist(new CarModel()
{
Name = "Opel"
});
repository.AddIfNotExist(new CarModel()
{
Name = "Nissan"
});
repository.AddIfNotExist(new CarModel()
{
Name = "Ford"
});
repository.AddIfNotExist(new CarModel()
{
Name = "KIA"
});
}