title: How dismiss a viewController with storyboard from a push segue?
body: <p>I don't know why <code>dismissViewControllerAnimated:completion:</code>. I just want to do it.</p>
  
  <p>I start with a </p>
  
  <pre><code>[self performSegueWithIdentifier:@"my_segue" sender:self];
  </code></pre>
  
  <p>But is I call the dismiss than nothing happens. I can create another segue, but it create a new view controller. </p>
  
  <p>My question is: How dismiss the <code>performSegueWithIdentifier:sender:</code>?</p>