AgGateway.ADAPT.ISOv4Plugin.Loaders.ProductMixLoader.LoadProductRelation C# (CSharp) Method

        private Ingredient LoadProductRelation(XmlNode productRelationNode, ProductMix productMix)
        {
            var productId = productRelationNode.GetXmlNodeValue("@A");
            var productQuantity = productRelationNode.GetXmlNodeValue("@B");

            if (string.IsNullOrEmpty(productId) || string.IsNullOrEmpty(productQuantity))
                return null;

            long quantity;
            if (!long.TryParse(productQuantity, NumberStyles.Integer, CultureInfo.InvariantCulture, out quantity) ||
                quantity < 0)
                return null;

            Product product;
            if (_taskDocument.Products.TryGetValue(productId, out product) == false)
                return null;

            var unit = _taskDocument.UnitsByItemId.FindById(productId);
            var numericValue = new NumericValue(unit.ToAdaptUnit(), unit.ConvertFromIsoUnit(quantity));

            var ingredient = new ActiveIngredient
            {
                Description = product.Description,
            };

            var productComponent = new ProductComponent
            {
                IngredientId = product.Id.ReferenceId,
                Quantity = new NumericRepresentationValue(null, numericValue.UnitOfMeasure, numericValue)
            };

            if (productMix.ProductComponents == null)
                productMix.ProductComponents = new List<ProductComponent>();
            productMix.ProductComponents.Add(productComponent);

            return ingredient;
        }