Fluent.MenuPanel.InvalidateUpdateMenuSizes C# (CSharp) Method

        private void InvalidateUpdateMenuSizes()
        {
            if (isInvalidated) return;
            isInvalidated = true;
            Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle,(ThreadStart)(()=>
            {
                isInvalidated = false;
                UpdateMenuSizes();
                UpdateLayout();
            }));
        }