class ClosedTabItem { final String id; final String closedTabId; final String productId; final String productName; final int quantity; final int unitPriceInCents; ClosedTabItem({ required this.id, required this.closedTabId, required this.productId, required this.productName, required this.quantity, required this.unitPriceInCents, }); int get lineTotalInCents => quantity * unitPriceInCents; }