public decimal CalculateBalance(CustomerA customer) { return(customer.LateFees.Sum()); }
public void RentVideo(VideoA video, CustomerA customer) { customer.Videos.Add(video); }
public decimal CalculateBalance(CustomerA customer) { return(customer.LateFees.Sum()); }
public void RentVideo(VideoA video, CustomerA customer) { customer.Videos.Add(video); }