title: Responder Chain in Swift (nil target in UIButton target)
body: <p>I have got a problem using the responder chain in swift.</p>
  
  <p>When I setup a buttons target using a nil target like:</p>
  
  <pre><code>someButton.addTarget(nil, action:"addButtonTapped:", forControlEvents: .TouchUpInside)
  </code></pre>
  
  <p>The action will be send up the responder chain until the action is handled in the controller. So far so good :-)</p>
  
  <p>But I want to intercept the action, execute some code and relay it on to the controller. But I cannot find a way to do this in swift. In ObjC this task is easy to do so I guess there should be a way in swift too.</p>
  
  <p>Thanks in advance for any help :-)</p>