private async Task <List <ProductWithQuantity> > SortByPopularity()
{
var shopperHistories = await _apiCaller.GetShopperHistory();
var productPopularity = GenerateProductPopularity(shopperHistories);
var _products = await _apiCaller.GetProducts();
_products.Sort((x, y) => { return(productPopularity.TryGetValue(y.Name).CompareTo(productPopularity.TryGetValue(x.Name))); });
return(_products);
}