'Return tuples of names in path from the root stack.
If this is not nested return (None, self.name), else return tuples of
names (stack_resource.name, stack.name) in path from the root stack and
including this stack.
:returns: a list of (string, string) tuples.'

def path_in_stack(self):

    opis = self.object_path_in_stack()
    return [((stckres.name if stckres else None), (stck.name if stck else None)) for (stckres, stck) in opis]
