This is an element that can live on a Canvas.
| transform | Get the transform associated with the ICanvasElement. |
| GraphicUpdateComplete | Callback sent when this ICanvasElement has completed Graphic rebuild. |
| IsDestroyed | Return true if the element is considered destroyed. Used if the native representation has been destroyed. |
| LayoutComplete | Callback sent when this ICanvasElement has completed layout. |
| Rebuild | Rebuild the element for the given stage. |