public static Broker GetBroker(int id = 1, int totalApartmentAds = 10) { var broker = new Faker <Broker>() .CustomInstantiator(f => new Broker( $"Broker{id}", f.Phone.PhoneNumber("+########"))) .Generate() .SetId(id); foreach (var apartmentAd in GetApartmentAds().Take(totalApartmentAds)) { broker.AddApartmentAd(apartmentAd); } return(broker); }