def persistenceTimerExpired(self):
        self.log.debug('persistenceTimerExpired called')

        # If at least one user have its quotas updated, then persist
        # groups and users to disk
        for u in self.users:
            if u.mt_credential.quotas_updated:
                self.log.info('Detected a user quota update, users and groups will be persisted.')
                self.perspective_persist(scope='groups')
                self.perspective_persist(scope='users')
                u.mt_credential.quotas_updated = False
                self.log.debug('Persisted successfully')
                break

        self.activatePersistenceTimer()
Instantiate an input data placeholder variable.
dataset/ETHPy150Open jookies/jasmin/jasmin/routing/router.py/RouterPB.persistenceTimerExpired--crossover with--dataset/ETHPy150Open sharadmv/deepx/deepx/backend/theano_backend.py/placeholder