public static void ShowDesignOverlay( TimelineStyle testStyle = null) { if (designOverlay == null) { dummyNoticeList = TimelineVisualNoticeModel.CreateDummyNotices(testStyle); designOverlay = CreateDesignOverlay(); } designOverlay.Show(); designOverlay.OverlayVisible = true; foreach (var notice in dummyNoticeList) { designOverlay.AddNotice(notice, true); } }