Creating a simple TLF TextContainerManager in Flex 4

package {
    import flash.display.Sprite;
 
    import flashx.textLayout.container.TextContainerManager;
 
    [SWF(width="550", height="300")]
 
    public class TextContainerManager_setText_test extends Sprite {
        public function TextContainerManager_setText_test() {
            var spr:Sprite = new Sprite();
            addChild(spr);
            spr.x = 40;
            spr.y = 50;
 
            var tcm:TextContainerManager = new TextContainerManager(spr);
            tcm.compositionWidth = 300;
            tcm.compositionHeight = 200;
            tcm.setText("(1)The quick brown fox jumps over the lazy dev. (2)The quick brown fox jumps over the lazy dev. (3)The quick brown fox jumps over the lazy dev. (4)The quick brown fox jumps over the lazy dev. (5)The quick brown fox jumps over the lazy dev.");
            tcm.updateContainer();
        }
    }
}