public async void ViewLoaded()
        {
            Product.UserID = ((PostLogInViewModel)Parent).User.Id;
            var productTypes = await ProductProcessor.GetProductTypes();

            SelectionProductTypes = new BindableCollection <ProductType>();
            foreach (ProductType productType in productTypes)
            {
                SelectionProductTypes.Add(productType);
            }

            if (SelectionProductTypes.Count > 0)
            {
                SelectedProductTypes = SelectionProductTypes[0];
            }
        }
        public async void ViewLoaded()
        {
            var productTypes = await ProductProcessor.GetProductTypes().ConfigureAwait(true);

            itemsType.AddRange(productTypes);
        }