Flex中如何利用mx.utils.UIDUtil类的createUID()函数创建UID的例子

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white">

<mx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.utils.ObjectUtil;
import mx.utils.UIDUtil;

private function displayUID():void {
var text:String = ObjectUtil.toString(myObj);
var title:String = UIDUtil.getUID(myObj);
Alert.show(text, title);
}
]]>
</mx:Script>

<mx:Object id="myObj" name="peter" site="flexexamples.com" />

<mx:ApplicationControlBar dock="true">
<mx:Button label="Display UID"
click="displayUID();" />
</mx:ApplicationControlBar>

</mx:Application>