AppNext is ad showing

Is there a method within AppNext that returns whether or not an interstitial ad is showing or not?

Sorry, I’m not sure I understand. Please explain.
You can also ask in private.

You are asking about ad listener:)

Yes; Is there an ad listener built into the sdk or must one be created manually?

setAdLoadInterface
setPopupClickedCallback
setPopupOpenedInterface
setPopupClosedCallback