public static async Task <CarFactory> CreateCarFactory(IDbCars db)
{
_ = db ??
throw new ArgumentNullException(nameof(db));
var cars = (await db.GetCarsQueryAsync()).ToList();
var carFactory = new CarFactory(cars);
return(carFactory);
}
static void Main(string[] args)
{
WriteLine("[Main START] Initializing car factory...");
var db = new DbCars();
var carFactory = new CarFactory(db);
#region STEP 2. apply after STEP 1. and comment out line #14
// var carFactory = CarFactory.CreateCarFactory(db);
#endregion
WriteLine("Our car factory produces the following models:\n");
carFactory.Cars.ForEach(WriteLine);
WriteLine("\n[END] Press any key to exit...");
ReadLine();
}