public void Update(Inventory inventory)
        {
            //Retrieve inventory item
            var inventoryInDb = inventoryContext.Get(inventory.Id);

            //If in DB, update
            if (inventoryInDb != null)
            {
                inventoryInDb.Quantity = inventory.Quantity;
            }

            //Commit changes
            inventoryContext.Commit();
        }
        public void UpdateInventory(string id, int stockMovement)
        {
            var inventory = inventoryContext.Get(id);

            inventory.Quantity += stockMovement;
            inventoryContext.Commit();
        }