PowerArgs.Cli.ScrollablePanel.OnAddedToVisualTree C# (CSharp) Method

        private void OnAddedToVisualTree()
        {
            focusSubscription = Application.FocusManager.SubscribeUnmanaged(nameof(FocusManager.FocusedControl), FocusChanged);
            SynchronizeForLifetime(nameof(HorizontalScrollUnits), UpdateScrollbars, this.LifetimeManager);
            SynchronizeForLifetime(nameof(VerticalScrollUnits), UpdateScrollbars, this.LifetimeManager);
            ScrollableContent.Controls.SynchronizeForLifetime(ScrollableControls_Added, (c)=> { }, () => { }, this.LifetimeManager);
        }