Alpha of Graphics is not affected by container alpha

Currently the alpha of Graphics is not adjusted by a container's alpha. This precise scenario could be fixed fairly simply by multiplying the current DisplayObject's alpha with the parent cumulative alpha. However, the larger strategy for handling masking, cacheAsBitmap, and BlendMode.LAYER should be taken into account when fixing this.

package ;

 import flash.display.Sprite;
 import flash.display.Shape;
 import flash.Lib;

class Main extends Sprite{

 public static function main() {
         Lib.current.stage.addChild(new Main());
 }

 public function new(){
  super();
  var s:Sprite = new Sprite();
  s.graphics.beginFill(0x0099FF);
  s.graphics.drawRect(0,0,50,50);
  s.graphics.endFill();

  var inset:Shape = new Shape();
  inset.graphics.beginFill(0xFF0000);
  inset.graphics.drawRect(10,10,30,30);
  inset.graphics.endFill();

  s.x=s.y=100;
  s.alpha=0.1;
  s.addChild(inset);
  addChild(s);
 }
}