Caliburn.Micro.WindowManager.DialogHost.DefaultElementPlacementAnimator.Exit C# (CSharp) Метод

                public void Exit(System.Action onCompleted)
                {
                    storyboard.Stop();
                    storyboard.Children.Clear();

                    //exit animation
                    var projection = new PlaneProjection { CenterOfRotationY = 0.1 };
                    viewContainer.Projection = projection;
                    AddDoubleAnimation(projection, "RotationX", from: 0, to: 90, ms: 250);
                    AddDoubleAnimation(maskingLayer, "Opacity", from: 1, to: 0, ms: 350);

                    EventHandler handler = null;
                    handler = new EventHandler((o, e) =>
                    {
                        storyboard.Completed -= handler;
                        onCompleted();
                        currentPlacement = null;
                    });
                    storyboard.Completed += handler;
                    storyboard.Begin();
                }