title: Xcode Promoting ViewController to TabViewController doesn't work?
body: <p>A newbie question here.</p>
  
  <p>If you had initially a View Controller on your Storyboard.</p>
  
  <p>Then you wanted to promote this to a Tab View Controller.</p>
  
  <p>Why is it that it doesn't work, if I changed that View Controller's inherit from the identity inspector to TabViewController, it doesn't seem to work.</p>
  
  <p>What I mean is, if I then try to create a segue reference to the TabViewController's viewControllers reference list, it doesn't work, because viewControllers isn't available.</p>
  
  <p>I guess my question is, is there more to it than just changing the base class for that controllers object for it to work?</p>
  
  <p>Thanks!</p>