TenjinSDK.instance.setRewardCallback undefined

[khoa-superfine]

I am unable to use the code mentioned in the example for deep linking.
TenjinSDK.instance.setRewardCallback = (bool clickedTenjinLink, bool isFirstSession, Map<String, String> data) { if (isFirstSession) { if (clickedTenjinLink) { if (data.containsKey(TenjinSDK.DEEPLINK_URL)) { // use the deferred_deeplink_url to direct the user to a specific part of your app } } } };