if objLen == 0 {
				continue
			}

			// Various ranges to query - all are valid!
			rangeHdrs := []string{
				// Read first byte of object
				fmt.Sprintf("bytes=%d-%d", 0, 0),
				// Read second byte of object
				fmt.Sprintf("bytes=%d-%d", 1, 1),
				// Read last byte of object
				fmt.Sprintf("bytes=-%d", 1),
				// Read all but first byte of object
				"bytes=1-",
				// Read first half of object

	nestedCall(func() {
		for i := 0; i < 10; i++ {
			c <- i
			if j := <-c; j != i {
				t.Errorf("out of sync %d != %d", j, i)
			}
		}
	})
}

// Test that the stack can be unwound through a call out and call back
// into Go.
func testCallbackCallers(t *testing.T) {
	if runtime.Compiler != "gc" {
		// The exact function names are not going to be the same.
		t.Skip("skipping for non-gc toolchain")
	}

			return madmin.ReplicateAddStatus{}, errSRInvalidRequest(fmt.Errorf("all existing replicated sites must be specified - missing %s", strings.Join(diffSlc, " ")))
		}
	}

	// validate that all clusters are using the same IDP settings.
	err = c.validateIDPSettings(ctx, sites)
	if err != nil {
		return madmin.ReplicateAddStatus{}, err
	}

	// For this `add` API, either all clusters must be empty or the local

	return
}

type replicationAction string

const (
	replicateMetadata replicationAction = "metadata"
	replicateNone     replicationAction = "none"
	replicateAll      replicationAction = "all"
)

// matches k1 with all keys, returns 'true' if one of them matches
func equals(k1 string, keys ...string) bool {
	for _, k2 := range keys {
		if strings.EqualFold(k1, k2) {
			return true
		}
	}
	return false

		defer wg.Done()
		for metric := range in {
			labels, values := getOrderedLabelValueArrays(metric.VariableLabels)
			collectMetric(metric, labels, values, "bucket", out)
		}
	}

	// Call peer api to fetch metrics
	wg.Add(2)
	go publish(ReportMetrics(GlobalContext, c.metricsGroups))
	go publish(globalNotificationSys.GetBucketMetrics(GlobalContext))
	wg.Wait()
}

	w.Header().Del(xhttp.ContentType)

	if _, ok := opts.ObjectAttributes[xhttp.Checksum]; ok {
		chkSums := objInfo.decryptChecksums(0)
		// AWS does not appear to append part number on this API call.
		switch {
		case chkSums["CRC32"] != "":
			OA.Checksum = new(objectAttributesChecksum)
			OA.Checksum.ChecksumCRC32 = strings.Split(chkSums["CRC32"], "-")[0]
		case chkSums["CRC32C"] != "":

		c.Assert(err, nil)

		// execute the http request.
		response, err = s.client.Do(request)
		c.Assert(err, nil)
		// assert the status of http response.
		c.Assert(response.StatusCode, http.StatusOK)
		// Append all objects.
		delObjReq.Objects = append(delObjReq.Objects, ObjectToDelete{
			ObjectV: ObjectV{
				ObjectName: objName,
			},
		})
	}
	// Marshal delete request.
	deleteReqBytes, err := xml.Marshal(delObjReq)