def get_modifiers_id(self, version: int) -> str:
    res = []
    if self.volatile:
        res.append('V')
    if self.const:
        if (version == 1):
            res.append('C')
        else:
            res.append('K')
    if (self.refQual == '&&'):
        res.append('O')
    elif (self.refQual == '&'):
        res.append('R')
    return ''.join(res)
def get_modifiers_id(self, version: int) -> str:
    res = []
    if self.volatile:
        res.append('V')
    if self.const:
        if (version == 1):
            res.append('C')
        else:
            res.append('K')
    if (self.refQual == '&&'):
        res.append('O')
    elif (self.refQual == '&'):
        res.append('R')
    return .join(res)