Different 'Read In-App Purchase Information' node?

I was wondering a bit about the setup that this image shows - the ‘Read In App Purchase Information’ is different from the one in the doc (https://docs.unrealengine.com/latest/INT/Platforms/Mobile/InAppPurchases/) so firstly I was wondering what that’s all about?

Secondly, and more importantly, what does the setup do? It binds the OnSuccess from the Read In App Purchase Information, which I guess means it’s latent and OnSuccess might not happen until some time after? Why use this setup and not the other one that the doc mentions?

Thanks.