# File lib/fog/aws/requests/elb/add_tags.rb, line 29
        def add_tags(elb_id, tags)
          response = Excon::Response.new
          if server = self.data[:load_balancers][elb_id]
            self.data[:tags][elb_id].merge! tags
            response.status = 200
            response.body = {
              "ResponseMetadata"=>{ "RequestId"=> Fog::AWS::Mock.request_id }
            }
            response
          else
            raise Fog::AWS::ELB::NotFound.new("Elastic load balancer #{elb_id} not found")
          end
        end