Out-of-stack operations-Cross-page pop, but not to rootViewController

For (UIViewController * controller in self. navigationController. viewControllers ){
If ([controller isKindOfClass: [OverWorkRecevice class]) {
OverWorkRecevice * owr = (OverWorkRecevice *) controller;
[Self. navigationControllerpopToViewController: owr animated: YES];
}
}

I can see the code. We must find the viewcontroller that is pushed into the stack when we return the result. So how can we find it? This problem has plagued me for several minutes. Later I thought about it, since it has been pushed into the stack, try viewControllers. Record it, hoping to help some people.