public void UpdateFrom(SubscriptionDetailsDTO subscriptionDetails)
{
ViewMode = ViewMode.Confirmed;
Details.Name = subscriptionDetails.Name;
Details.Street = subscriptionDetails.Street;
Details.HouseNumber = subscriptionDetails.HouseNumber;
Details.City = subscriptionDetails.City;
Details.ZipCode = subscriptionDetails.ZipCode;
Details.Country = subscriptionDetails.Country;
NumberOfPossibleBooksOut = subscriptionDetails.NumberOfPossibleBooksOut;
MonthlyCost = subscriptionDetails.MonthlyCost;
Details.CreditCard = subscriptionDetails.CreditCard;
}