This method returns a scene for the given index. If no scene is found NULL is
returned. See the scene class
documentation for more information.
function onSample()
{
var sceneCount = shell.sceneCount;
for (i = 0; i < sceneCount; i++)
{
var myScene = shell.getSceneAt(i);
if (myScene)
{
shell.print(myScene.url);
}
}
}