track Mediation View
Tracks the specified mediation view instead of this SASNativeAdView instance. Useful for mediation scenarios where the primary SDK is in charge of rendering the SASNativeAdAssets, disregarding the rendered SASNativeAdView, where its own rendered view must be tracked for impression (when added to UI hierarchy), viewability, and clicks.
This method has no effect if this SASNativeAdView instance was already displaying a native ad (i.e. attached to a UI hierarchy + with a successfully loaded native ad) The typical use is to call this method on a SASNativeAdView after it has successfully loaded a native ad, but was not added to any UI yet.