def get_id(self, version: int) -> str:
    id_ = _id_operator_v2[',']
    res = []
    for i in range((len(self.exprs) - 1)):
        res.append(id_)
        res.append(self.exprs[i].get_id(version))
    res.append(self.exprs[(- 1)].get_id(version))
    return ''.join(res)
def get_id(self, version: int) -> str:
    id_ = _id_operator_v2[',']
    res = []
    for i in range((len(self.exprs) - 1)):
        res.append(id_)
        res.append(self.exprs[i].get_id(version))
    res.append(self.exprs[(- 1)].get_id(version))
    return .join(res)