Indicates whether the ad handles user clicks. If this method returns YES, the ad must handle
user clicks and notify the Google Mobile Ads SDK of clicks using
-[GADMediationAdEventDelegate reportClick:]. If this method returns NO, the Google Mobile Ads
SDK handles user clicks and notifies the ad of clicks using -[GADMediationNativeAd
didRecordClickOnAssetWithName:view:viewController:].
Indicates whether the ad handles user impressions tracking. If this method returns YES, the
Google Mobile Ads SDK will not track user impressions and the ad must notify the
Google Mobile Ads SDK of impressions using -[GADMediationAdEventDelegate
reportImpression:]. If this method returns NO, the Google Mobile Ads SDK tracks user impressions
and notifies the ad of impressions using -[GADMediationNativeAd didRecordImpression:].