private void CropAndRotate(object sender, EventArgs e)
        {
            var config     = SBSDKUICroppingScreenConfiguration.DefaultConfiguration;
            var controller = SBSDKUICroppingViewController.CreateNewWithPage(PageRepository.Current, config, handler);

            controller.ModalPresentationStyle = UIModalPresentationStyle.FullScreen;
            PresentViewController(controller, false, null);
        }
 public override void DidFinish(SBSDKUICroppingViewController viewController, SBSDKUIPage changedPage)
 {
     Finished?.Invoke(this, new CroppingFinishedArgs {
         Page = changedPage
     });
 }