title: How to get the presentationStyle of iMessage Extension
body: <p>I am work around the UI Issues in the new iMessage extension framework. While transitioning from one presentation style to another I can easily tell the function to change the constant of one of my constraints, however this does not help if I am navigating the app from the expanded style. I have attempted to use </p>
  
  <pre><code>if (self.presentationStyle == .expanded){
      *Constraint code which works in other functions*
     }
  </code></pre>