Regression with tree.iconFunction: default icons have disapperead

I have a tree control, with redefined function icon.
However, for some items, I would use the default tree icons (file, sheet,...)
In Flex 1.5, if returned null from the iconFunction, the default icon displayed.
Flex 2.0, this no longer works. The doc said that the icons are in Assets.swf, but how to reference and nest them in my application?

The default icons for trees are indeed rooted in Assets.swf. You can find the names of symbols in defaults.css checking entries of type tree selector.

defaultLeafIcon: Embed (source = "Assets.swf", symbol = "TreeNodeIcon");
disclosureClosedIcon: Embed (source = "Assets.swf", symbol = "TreeDisclosureClosed");
disclosureOpenIcon: Embed (source = "Assets.swf", symbol = "TreeDisclosureOpen");
folderClosedIcon: Embed (source = "Assets.swf", symbol = "TreeFolderClosed");
folderOpenIcon: Embed (source = "Assets.swf", symbol = "TreeFolderOpen");

Tags: Flex

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