def fireExpandEvent(self, itemId):
        event = ExpandEvent(self, itemId)
        self.fireEvent(event)
Convert an XML tree into a dict. The tree that is passed in must be an
dataset/ETHPy150Open rwl/muntjac/muntjac/ui/tree.py/Tree.fireExpandEvent--crossover with--dataset/ETHPy150Open saltstack/salt/salt/utils/xmlutil.py/to_dict