[Help] Dynamic Product Catalog: Custom ICatalogProvider with StandardPurchasingModule

I want to accomplish a dynamically updating list of available products, controlled by a backend. The ICatalogProvider interface is perfect for it. However, I can't seem to find a way to set it to my implementation anywhere, is there a better/preferred way of adding products dynamically, or should I just add them directly to the ConfigurationBuilder on startup?

I also notice that the AbstractPurchasingModule that the StandardPurchasingModule inherits from has an IPurchasingBinder but it's protected so I can't access it...

This is kinda what I would expect to be possible:

Code (CSharp):

1.  public class MyIAPStore : IStoreListener, ICatalogProvider
2.     {
3.         public MyIAPStore()
4.         {
5.             var module = StandardPurchasingModule.Instance();
6.             // module.SetCatalogProvider(this); <- either this
7.             var builder = ConfigurationBuilder.Instance(module);
8.  
9.             builder.useCatalogProvider = true;
10.             // builder.SetCatalogProvider(this); <- or this
11.             UnityPurchasing.Initialize(this, builder);
12.         }
13.  
14.         void ICatalogProvider.FetchProducts(Action<HashSet<ProductDefinition>> callback)
15.         {
16.             var products = new HashSet<ProductDefinition>();
17.             // Fetch the products
18.             callback(products);
19.         }
20.     }

 

You can call FetchAdditionalProducts https://docs.unity3d.com/ScriptReference/Purchasing.IStoreController.FetchAdditionalProducts.html