@class UIViewController, NSMutableArray; @interface _UIStoryboardUnwindChain : NSObject { NSMutableArray *_viewControllers; unsigned long long _commonAncestorIdx; unsigned long long _modalAncestorContainingSourceIdx; } @property (readonly, nonatomic) UIViewController *commonAncestorViewController; @property (readonly, nonatomic) UIViewController *modalAncestorContainingSourceViewController; - (void).cxx_destruct; - (id)debugDescription; - (void)enumerateViewControllersFromModalAncestorUpToButNotIncludingDestination:(id /* block */)a0; - (id)initFromSourceViewController:(id)a0 toDestinationViewController:(id)a1; @end