def final_check(self, cursor):
        if self.get_teams(cursor=cursor):
            raise self.StillATeamOwner
        if self.balance != 0:
            raise self.BalanceIsNotZero
Sanity-check that teams and balance have been dealt with.
dataset/ETHPy150Open gratipay/gratipay.com/gratipay/models/participant.py/Participant.final_check