def METHOD_NAME(self):
    res = {}
    if self._type == "tree":
        keys = list(self._value.keys())
        for k in keys:
            curr = self._value[k]
            if curr._type=="tree":
                for p,v in list(curr.METHOD_NAME().items()):
                    res[k + "/" + p] = v
            else:
                res[k] = curr._value
    return res