AirSDK 1.0 Smartwall on exit?

Hello , i am planning to implement their smartwall on app exit?
In new SDK doc they said :

If you want to show a SmartWall ad where the sub-format will be determined by SDK, please use the code below:

@Override
public void onBackPressed() {
if (airPlay!=null) {
airPlay.startSmartWallAd();
}
super.onBackPressed();
}

Someone mentioned that this is not maybe compliant with new google play policy?
Can someone shed some light on this topic?

Tnx

The problem with Airpush Smartwall was that it didn’t load right away when triggered (plus some unpredictable popps), and this delay could be now considered an out-of-app ad. I don’t know how these ads behave with the new SDK implementation, though.