# File lib/fog/aws/requests/elb/set_load_balancer_policies_for_backend_server.rb, line 19
        def set_load_balancer_policies_for_backend_server(lb_name, instance_port, policy_names)
          params = {'InstancePort' => instance_port}
          if policy_names.any?
            params.merge!(Fog::AWS.indexed_param('PolicyNames.member', policy_names))
          else
            params['PolicyNames'] = ''
          end

          request({ 'Action' => 'SetLoadBalancerPoliciesForBackendServer',
                    'LoadBalancerName' => lb_name,
                    :parser => Fog::Parsers::AWS::ELB::Empty.new
                  }.merge!(params))
        end