title: UITabBarController never calls initWithNibName on individual tabs?
body: <p>Is it true that <code>UITabBarController</code> never calls <code>initWithNibName</code> on its child views (individual tabs)?  Or have I just set my app up in a really screwed-up way?  </p>
  
  <p>My MainWindow.xib looks like this in interface builder:
  <a href="http://web.mit.edu/keone/Public/tabbar.png" rel="nofollow noreferrer">tab bar in interface builder http://web.mit.edu/keone/Public/tabbar.png</a></p>
  
  <p>Note that the Window is completely blank while all the action happens in the Tab Bar Controller.</p>
  
  <p>My app delegate calls <code>[window addSubview:tabBarController.view]</code> in <code>application:didFinishLaunchingWithOptions</code> and once that happens we're off to the races!</p>
  
  <p>But when I put breakpoints on the <code>init</code>, <code>initWithNibName:</code>, and <code>initWithNibName:bundle:</code> methods in any of my individual controllers (which are listed in Interface Builder as children of the tabs, as the image above shows), nothing catches.</p>
  
  <p>Thanks in advance!</p>