'Return a list of policy description string.
:rtype: ``list`` of ``str``'

def ex_list_balancer_policies(self, balancer):

    params = {'Action': 'DescribeLoadBalancerPolicies', 'LoadBalancerName': balancer.id}
    data = self.connection.request(ROOT, params=params).object
    return self._to_policies(data)
