Smart Tipping with Reader SDK

Thanks - ok that confirms my suspicion that it’s in there. Is there any more guidance about how to get it to work or show up? I saw this on that page you linked:
@NSCopying var tipSettings: SQRDTipSettings? { get set }

update: I found this too: SQRDTipSettings Class Reference

but still can’t figure out what I’m doing wrong in my Swift code.

Thanks!