def setNullSelectionItemId(self, nullSelectionItemId):
        if nullSelectionItemId is not None:
            raise NotImplementedError
Delete the rule from the lb
dataset/ETHPy150Open rwl/muntjac/muntjac/ui/tree.py/Tree.setNullSelectionItemId--crossover with--dataset/ETHPy150Open tdevelioglu/python-f5/f5/rule.py/Rule.delete