public override void RenderBefore(RenderContext context)
{
_memento = context.Renderer.RenderRibbon.DrawRibbonBack(_ribbon.RibbonShape,
context,
ClientRectangle,
PaletteState.Normal,
_ribbon.StateCommon.RibbonQATOverflow,
VisualOrientation.Top,
false,
_memento);
}