XML Flash ActionScript

package{
  import flash.display.Sprite;
  
  public class Main extends Sprite{
    public function Main(){
        var squareLength:Number = 10;
        var circleRadius:Number = 5;
        var shapeData:XML = 
                               
                               
                            
;
        trace(shapeData.toXMLString());
    }
  }
}