def walk(self, callback, collect=None):
        if collect is None:
            collect = []

        r = callback(self)
        if r is not None:
            collect.append(r)

        for node in self.get_children():
            node.walk(callback, collect)

        return collect
Returns a Question of specified type.
dataset/ETHPy150Open los-cocos/cocos/cocos/cocosnode.py/CocosNode.walk--crossover with--dataset/ETHPy150Open sdispater/cleo/cleo/commands/command.py/Command.create_question