def descendants(self):
        """Iterates over all the descendants of the current node,
            in order, to the leaf level."""
        if self.vssItem is not None:
            for item in self.__gen(self.vssItem):
                yield Node(item);
Iterates over all the descendants of the current node,
            in order, to the leaf level.
recipes/Python/473884_VSS_Integration_Module/recipe-473884.py