title: Get image name from touchesEnded
body: <p>In my storyboard I have a few images that are "User Interaction Enabled". 
  In the <code>UIViewController</code> I override the <code>touchesEnded</code> function.</p>
  
  <pre><code>override func touchesEnded(_ touches: Set&lt;UITouch&gt;, with event: UIEvent?) {
          super.touchesEnded(touches, with: event)
  }
  </code></pre>
  
  <p>Is it possible for me to get the name of the image that was clicked in this function? I would prefer not to <code>@IBOutlet</code> the images.</p>