'Return a list of load balancer target groups with members.
:rtype: ``list`` of ``dict``'

def _ex_get_balancer_target_groups(self, balancer):

    params = {'Action': 'DescribeTargetGroups', 'LoadBalancerArn': balancer.id}
    data = self.connection.request(ROOT, params=params).object
    return self._to_target_groups(data)
