code: def set_lb_policies_of_listener(self, lb_name, lb_port, policies):
          
          params = {
                      'LoadBalancerName'          : lb_name,
                      'LoadBalancerPort'          : lb_port,
                   }
          self.build_list_params(params, policies, 'PolicyNames.member.%d')
          return self.get_status('SetLoadBalancerPoliciesOfListener', params)
docs: Associates, updates, or disables a policy with a listener on the load
          balancer. Currently only zero (0) or one (1) policy can be associated
          with a listener.