[Libvir] ISCSI howto, example, etc?

The documentation on the new storage feature is either a little short, or I totally missed it. Anyway, I am looking for some help on how to use it. If anyone could maybe give me an example xml file that would be incredibly helpful, because based on the format description I can't exactly figure out what information I am supposed to put where (for ISCSI). Thanks! -- $ ./Mark