title: When I add a UIContainerView to a view controller it's type is UIView. How do I get to the viewcontroller for the embedded view?
body: <p>When I add a UIContainerView to a view controller it's type is UIView.</p>
  
  <p>How do I get to the UIViewController for the embedded view?</p>
  
  <p>I need to set some properties of the embedded view view controller.</p>
  
  <p>Thank you</p>