internal OrderItemModel(OrderItem orderItem, IReadOnlyList <ExtendedOrderItemRecipientModel> recipients)
{
CatalogueItemId = orderItem.CatalogueItem.Id.ToString();
CataloguePriceType = orderItem.CataloguePriceType.ToString();
CatalogueItemType = orderItem.CatalogueItem.CatalogueItemType.ToString();
CatalogueItemName = orderItem.CatalogueItem.Name;
ProvisioningType = orderItem.ProvisioningType.ToString();
ItemUnitDescription = orderItem.PricingUnit.Description;
TimeUnitDescription = orderItem.PriceTimeUnit?.Description();
QuantityPeriodDescription = orderItem.EstimationPeriod?.Description();
Price = orderItem.Price;
CostPerYear = orderItem.CalculateTotalCostPerYear();
ServiceRecipients = recipients;
}