Get campaign/discount information on product

Ok, looking at a baseProduct the ProductListLinks seems to be deprecated
with the following message:

"Membership of the Base Product in ProductList need to be handled in ProductList. List of linked product lists could be retrieved by calling ProductListService.GetByBaseProduct."

Looking at the ProductListService it doesn’t appear to have any extensionmethods called GetByBaseProduct.

Any chance you can provide an example of how this can be done?

Mvh