public static void SortCars(this CarPark carPark, Comparison <Car> comparison) => carPark.Cars.Sort(comparison);
public static IEnumerable <Car> GetCars(this CarPark carPark, Func <Car, bool> func) => carPark.Cars.Where(func);
public static void SortCars(this CarPark carPark, Comparison <Car> comparison) => carPark.Cars.Sort(comparison);
public static IEnumerable <Car> GetCars(this CarPark carPark, Func <Car, bool> func) => carPark.Cars.Where(func);