def get_default_repo(self):
        for repo in self.get_repos():
            if self.get_safe(repo, 'default') and self.getboolean(repo, 'default'):
                return repo
        return False
unregister listener function
dataset/ETHPy150Open ceph/ceph-deploy/ceph_deploy/conf/cephdeploy.py/Conf.get_default_repo--crossover with--dataset/ETHPy150Open cmorgan/trading-with-python/lib/eventSystem.py/Sender.unregister