I'm wondering is this API "indexTitlesForCollectionView" only available in iOS14 above?

(NSArray<__kindof UIViewController *> *)popToRootViewControllerAnimated:(BOOL)animated {    if (self.viewControllers.count > 1) {     self.topViewController.hidesBottomBarWhenPushed = NO;   }       NSArray<__kindof UIViewController *> *viewControllers = [super popToRootViewControllerAnimated:animated]; &#9;// self.viewControllers has two items here on iOS14   return viewControllers; } Some vc is still required to set hidesBottomBarWhenPushed = NO, I think popToRootViewControllerAnimated is another solution.