def get_id(self, version: int) -> str:
    prefix = ('ti' if self.isType else 'te')
    return (prefix + self.typeOrExpr.get_id(version))
def get_id(self, version: int) -> str:
    prefix = ('ti' if self.isType else 'te')
    return (prefix + self.typeOrExpr.get_id(version))