def __virtual__():
    if salt.utils.is_windows() or salt.utils.which('at') is None:
        return (False, 'The at module could not be loaded: at command not found')
    return True
Set the policies of an ELB listener.
dataset/ETHPy150Open saltstack/salt/salt/modules/at.py/__virtual__--crossover with--dataset/ETHPy150Open saltstack/salt/salt/modules/boto_elb.py/set_listener_policy