//      last modified: 105 seconds ago
    //             served:   5 seconds ago
    //   default lifetime: (105 - 5) / 10 = 10 seconds
    //            expires:  10 seconds from served date = 5 seconds from now
    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("Last-Modified: " + formatDate(-105, TimeUnit.SECONDS))
        .addHeader("Date: " + formatDate(-5, TimeUnit.SECONDS))

}

func (r *ReplicationStats) updateMovingAvg() {
	r.RLock()
	for _, s := range r.Cache {
		for _, st := range s.Stats {
			st.XferRateLrg.measure.updateExponentialMovingAverage(time.Now())
			st.XferRateSml.measure.updateExponentialMovingAverage(time.Now())
		}
	}
	r.RUnlock()
}

// ActiveWorkers returns worker stats
func (r *ReplicationStats) ActiveWorkers() ActiveWorkerStat {
	if r == nil {
		return ActiveWorkerStat{}

			req.Form = url.Values{"lambdaArn": []string{lambdaARN}}
			req.Header.Set("Host", "localhost")
			req.Header.Set("X-Amz-Date", time.Now().UTC().Format("20060102T150405Z"))
			sum := sha256.Sum256(body)
			req.Header.Set("X-Amz-Content-Sha256", hex.EncodeToString(sum[:]))
			req = signer.SignV4(*req, credentials.AccessKey, credentials.SecretKey, "", "us-east-1")

	remoteConn := local.Connection(remoteHost)
	errFatal(remoteConn.WaitForConnect(t.Context()))
	const testPayload = "Hello Grid World!"

	gotResp := make(chan struct{})
	go func() {
		start := time.Now()
		t.Log("Roundtrip: sending request")
		resp, err := remoteConn.Request(t.Context(), handlerTest, []byte(testPayload))
		t.Log("Roundtrip:", time.Since(start), resp, err)
		gotResp <- struct{}{}
	}()
	<-gotCall

		if ek, ok := errKind[0].(madmin.LogKind); ok {
			logKind = ek
		}
	}

	req := GetReqInfo(ctx)
	if req == nil {
		req = &ReqInfo{
			API:       "SYSTEM",
			RequestID: fmt.Sprintf("%X", time.Now().UTC().UnixNano()),
		}
	}
	req.RLock()
	defer req.RUnlock()

	API := "SYSTEM"
	switch {
	case req.API != "":
		API = req.API
	case subsystem != "":
		API += "." + subsystem
	}

	fmt.Printf("Attempting to combine version %q.\n", out)
	m, err := readAndMap(files, 1, 0)
	if err != nil {
		return err
	}
	if m.blocks > 0 {
		// TODO: Support multiple blocks. For now use -xver.
		return fmt.Errorf("multiple blocks found, only one block supported. Try with -xver")
	}
	lastValid := 0
	missing := 0
	for i := range m.filled {
		if m.filled[i] == 1 {
			lastValid = i

		readLocks:            make([]string, len(restClnts)),
		Names:                names,
		clnt:                 clnt,
		rng:                  rand.New(&lockedRandSource{src: rand.NewSource(time.Now().UTC().UnixNano())}),
		refreshInterval:      drwMutexRefreshInterval,
		lockRetryMinInterval: lockRetryMinInterval,
	}
}

// Lock holds a write lock on dm.
//

        oldItem.setTimestamp(ZonedDateTime.now().minusMinutes(1));
        suggester.indexer().index(oldItem);
        suggester.refresh();

        long oldWordsCount = suggester.getAllWordsNum();
        assertTrue(oldWordsCount > 0);

        ZonedDateTime threshold = ZonedDateTime.now();

        }
    }

    /**
     * Returns new builder from scratch.
     */
    static Builder newBuilder() {
        return new Builder().withStartTime(MonotonicClock.now());
    }

    class Builder {
        private Map<String, String> userProperties;
        private Map<String, String> systemProperties;
        private Instant startTime;
        private Path topDirectory;

	req := mustNewRequest(method, urlStr, contentLength, body, t)
	cred := globalActiveCred
	if err := preSignV2(req, cred.AccessKey, cred.SecretKey, time.Now().Add(10*time.Minute).Unix()); err != nil {
		t.Fatalf("Unable to initialized new signed http request %s", err)
	}
	return req
}

// This is similar to mustNewRequest but additionally the request