title: Is it possible determine if SKStore​Review​Controller has been presented.
body: <p>My intention is to either display the SKStore​Review​Controller (If applicable) or display my own feedback controller and redirect the user to the App Store. By doing this I can avoid asking the user for feedback more than once.</p>
  
  <p>After reading Apple's lacking documentation on SKStore​Review​Controller (<a href="https://developer.apple.com/reference/storekit/skstorereviewcontroller" rel="noreferrer">https://developer.apple.com/reference/storekit/skstorereviewcontroller</a>) it seems that there is no way to determine if SKStore​Review​Controller is currently presented or has been presented previously.</p>
  
  <p>I understand that I could potentially store the display frequency in NSUserDefaults, but I would prefer to avoid doing so.</p>