Dev:UIViewController

UIViewController is a root class of all controllers that managers a UIView.

attentionClassDumpUser:...
UIViewController is the host of the famous method -[UIViewController(UIViewControllerClassDumpWarning) attentionClassDumpUser:...]. This method was added in 3.0 as an attempt to "scare off" developers using undocumented methods. The method itself is a no-op.