I need to add some extra data to the order line when adding a product to the cart. In my implementation of AddToBasket in Bazaar this is what I am trying to do:

    // This is for legacy implementations of the Bazaar.  Using IProductContent we don't need this anymore.
    var extendedData = new ExtendedDataCollection();
    extendedData.SetValue("umbracoContentId", model.ContentId.ToString(CultureInfo.InvariantCulture));
    extendedData.SetValue("classId", model.ClassId.ToString(CultureInfo.InvariantCulture));
    extendedData.SetValue("studentId", model.StudentId.ToString(CultureInfo.InvariantCulture));

But the class and student are not going into the extended json against the order line. I see the comment at the top saying that this is for legacy Bazaar implementations and that it now uses IProductContent - but can't figure out how IProductContent comes into play when creating the extended JSON.

Any hints for be awesome.

Thanks, Trevor