 
         //overlayView...
 
+
         
     }
     


class PhotosViewController: UIViewController {

    private lazy var pageViewController = UIPageViewController()

    private var currentPhotoViewController: PhotoViewController?


    }
}

extension PhotosViewController: UIPageViewControllerDataSource {

    func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {

        // TODO
        return nil
    }

    func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {
        // TODO
        return nil
    }
}

extension PhotosViewController: UIPageViewControllerDelegate {

    func pageViewController(pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {

        // TODO
    }
}


