def execute(self):
        self._create_backup()
        self._delete_extra_backups()
        self._update_next_trigger_at()
        self.save()
Identify sets of values to use in UPDATE statements for a
dataset/ETHPy150Open opennode/nodeconductor/nodeconductor/backup/models.py/BackupSchedule.execute--crossover with--dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/orm/persistence.py/_collect_update_commands