def give_response(response, deferred)
      @delayer.new do
        next if deferred.spoiled?
        deferred.exit_await
        fiber.resume(response).accept_request(worker: self,
                                              deferred: deferred)
      end
      nil
    end
def give_response(response, deferred)
      @delayer.new do
        next if deferred.spoiled?
        deferred.exit_await
        fiber.resume(response).accept_request(worker: self,
                                              deferred: deferred)
      end
      nil
    end
Awaitから復帰した時に呼ばれる。
 ==== Args
 [response] Awaitの結果(Delayer::Deferred::Response::Base)
 [deferred] 現在実行中のDeferred