How to check if Item is purchased or not ?

[devnilspatel]

Hi, team I got your library from anjlib comment sections. I am old user of that library. When I want to check if any Product id is already purchased or not i mostly use billingProcessor.listOwnedProducts() and check it. In your library how can we check it ?

Thanks a lot.

[akshaaatt]

Please update to the latest implementation