Chinook.Model.Invoice.FixupCustomer C# (CSharp) Метод

        private void FixupCustomer(Customer previousValue)
        {
            if (previousValue != null && previousValue.Invoices.Contains(this))
            {
                previousValue.Invoices.Remove(this);
            }
    
            if (Customer != null)
            {
                if (!Customer.Invoices.Contains(this))
                {
                    Customer.Invoices.Add(this);
                }
                if (CustomerId != Customer.CustomerId)
                {
                    CustomerId = Customer.CustomerId;
                }
            }
        }