Anidar Paquetes con AS3

Hola Soy nuevo en el foro y novato en AS3

quiero saber como puedo anidar los paquetes.

He visto tutoriales, pero tododos confusos y no responden mis preguntas

ALguien puede decirme como anidar paquetes desde el principio?

Agradezco su oportuna respuesta

es que encontré este paquete pero me saca un error que los paquetes no se pueden anidar
package PointLight3D {

public class as {package
{
import flash.display.*;
import flash.events.*;
import flash.geom.Matrix;
import flash.net.URLRequest;
import flash.system.LoaderContext;
import org.libspark.betweenas3.BetweenAS3;
import org.libspark.betweenas3.easing.*;
import org.libspark.betweenas3.tweens.ITween;
import org.papervision3d.lights.PointLight3D;
import org.papervision3d.materials.BitmapMaterial;
import org.papervision3d.materials.shadematerials.FlatShadeMaterial;
import org.papervision3d.materials.utils.MaterialsList;
import org.papervision3d.objects.primitives.Cube;
import org.papervision3d.view.BasicView;

/**
* Cube Transition
* @author Yasu
*/
public class Main extends BasicView
{
static public const SEPATATE:uint = 10;
static public const IMAGE_URL_1:String = "";
static public const IMAGE_URL_2:String = "";

private var loader1:Loader;
private var loader2:Loader;
private var cubes:Array;
private var degree:Number = 0;
private var light:PointLight3D =
new PointLight3D();
public function Main():void
{
stage.quality = StageQuality.LOW;
stage.frameRate = 60;
viewport.opaqueBackground = 0x0;

var context:LoaderContext = new LoaderContext(true);

loader1 = new Loader();
loader1.contentLoaderInfo.addEventListener(Event.COMPLETE, function(e:Event):void
{
loader2= new Loader();
loader2.contentLoaderInfo.addEventListener(Event.COMPLETE, function(e:Event):void
{
init();
});
loader2.load(new URLRequest(IMAGE_URL_2), context);
});
loader1.load(new URLRequest(IMAGE_URL_1), context);
}

private function init():void
{
var sliceList1:Array = sliceBmp(loader1.content as Bitmap, true);
var sliceList2:Array = sliceBmp(loader2.content as Bitmap, true);
var sliceList3:Array = sliceBmp(loader1.content as Bitmap, false);
var sliceList4:Array = sliceBmp(loader2.content as Bitmap, false);

cubes = [];

for (var i:int = 0; i < SEPATATE; i++)
{
var bmpData1:BitmapMaterial = new BitmapMaterial(sliceList1[i], true);
var bmpData2:BitmapMaterial = new BitmapMaterial(sliceList2[i], true);
var bmpData3:BitmapMaterial = new BitmapMaterial(sliceList3[i], true);
var bmpData4:BitmapMaterial = new BitmapMaterial(sliceList4[i], true);

/*
bmpData1.smooth = true;
bmpData2.smooth = true;
bmpData3.smooth = true;
bmpData4.smooth = true;
*/

var cube:Cube = new Cube(new MaterialsList( {
bottom : bmpData1,
front : bmpData2,
top : bmpData3,
back : bmpData4,
left : new FlatShadeMaterial(light, 0xCCCCCC),
right : new FlatShadeMaterial(light, 0xCCCCCC)
}), loader1.content.width / SEPATATE, loader1.content.height, loader1.content.height);

cube.x = loader1.content.width / SEPATATE * (i - SEPATATE / 2 + 0.5);

cubes.push(scene.addChild(cube));
}

var tweens:Array = [];
for (var j:int = 1; j < 5; j++)
{
var localTweens:Array = [];
for (i = 0; i < cubes.length; i++)
{
var tw:ITween = BetweenAS3.bezier(cubes[i], { rotationX : -90 * j, scale:1 }, null, {scale:0.7}, 1.3, Cubic.easeInOut);
tw = BetweenAS3.delay(tw, 0.075 * i);
localTweens.push(tw);
}
tweens.push(BetweenAS3.delay(BetweenAS3.parallelTweens(localTweens), 1));
}
var tween:ITween = BetweenAS3.serialTweens(tweens)
tween.stopOnComplete = false;
tween.play();

startRendering();
//addEventListener(Event.ENTER_FRAME, loop);

camera.focus = 50;
camera.zoom = 4;
camera.z = -(camera.focus * camera.zoom + loader1.content.height / 2);
}

private function loop(e:Event):void
{
//var distance:Number = -(camera.focus * camera.zoom + loader1.content.height / 2);
var distance:Number = -600;
degree += ((mouseX / stage.stageWidth * 120 - 60) - degree) * 0.15;

camera.x = distance * Math.sin(degree * Math.PI / 180);
camera.z = distance * Math.cos(degree * Math.PI / 180);
camera.y += ((500 * mouseY / stage.stageHeight - 250) - camera.y) * 0.15;

light.copyPosition(camera);
}

private function sliceBmp(bmp:Bitmap, opposite:Boolean):Array
{
var arr:Array = [];
for (var i:int = 0; i < SEPATATE; i++)
{
var matrix:Matrix = new Matrix();
if (opposite)
{
matrix.scale(1, -1);
matrix.translate(0, bmp.height);
matrix.scale(-1, 1);
matrix.translate(bmp.width, 0);
matrix.translate( - bmp.width / SEPATATE * (SEPATATE - i - 1), 0);
}
else
{
matrix.translate( - bmp.width / SEPATATE * i, 0);
}


var bmpData:BitmapData = new BitmapData(bmp.width / SEPATATE, bmp.height);
bmpData.draw(bmp, matrix);

arr.push(bmpData);
}
return arr;
}
}
}


public function as() {
// constructor code
}

}

}

Donde dice

public class as {package

debe decir

public class as {

Jorge