errPriorityMissing                        = Errorf("Priority must be specified")
	errInvalidDeleteMarkerReplicationStatus   = Errorf("Delete marker replication status is invalid")
	errDestinationSourceIdentical             = Errorf("Destination bucket cannot be the same as the source bucket.")

	Checksum *hash.Checksum
	MD5Hex   string
}

// fanOutPutObject takes an input source reader and fans out multiple PUT operations
// based on the incoming fan-out request, a context cancellation by the caller
// would ensure all fan-out operations are canceled.

	// 3. If bucket versioning is enabled and
	//    a. version id is specified, remove its remote object.
	//    b. version id is not specified, nothing to be done (a delete marker is added).
	delTier := false
	switch {
	case !os.Versioned, os.Suspended: // 1, 2.a, 2.b
		delTier = true
	case os.Versioned && os.VersionID != "": // 3.a
		delTier = true
	}
	if delTier {

		// If marker is *after* the last possible object from the prefix it should return an empty list.
		{
			bucketNames[0], "Asia", "europe-object", "", "", 0,
			ListMultipartsInfo{KeyMarker: "europe-object", Prefix: "Asia", IsTruncated: false},
			nil, true,
		},
		// Setting an invalid combination of uploadIDMarker and Marker (Test number 11-12).
		{

		return ObjectNameInvalid{Bucket: bucket, Object: object}
	}
	return nil
}

// Checks for all ListObjects arguments validity.
func checkListObjsArgs(ctx context.Context, bucket, prefix, marker string) error {
	// Verify if bucket is valid.
	if !isMinioMetaBucketName(bucket) && s3utils.CheckValidBucketNameStrict(bucket) != nil {
		return BucketNameInvalid{Bucket: bucket}
	}

	r := rand.New(rand.NewSource(time.Now().UnixNano()))

	retryCtx, cancel := context.WithTimeout(ctx, timeout)
	defer cancel()

	for {
		select {
		case <-retryCtx.Done():
			// Caller context canceled or we timedout,
			// return false anyways for both situations.
			return false
		default:
			if lm.lock(id, source, isWriteLock) {
				return true
			}

				sizeS.deleteMarkers++
			}
			if oi.VersionID != "" && sz == actualSz {
				sizeS.versions++
			}
			sizeS.totalSize += sz

			// Skip tier accounting if object version is a delete-marker or a free-version
			// tracking deleted transitioned objects
			switch {
			case oi.DeleteMarker, oi.TransitionedObject.FreeVersion:
				continue
			}
			tier := oi.StorageClass
			if tier == "" {

// Assumes that c.Lock is held by caller.
func (c *iamCache) buildUserGroupMemberships() {
	for group, gi := range c.iamGroupsMap {
		c.updateGroupMembershipsMap(group, &gi)
	}
}

// updateGroupMembershipsMap - updates the memberships map for a
// group. IMPORTANT: Assumes c.Lock() is held by caller.
func (c *iamCache) updateGroupMembershipsMap(group string, gi *GroupInfo) {

	}

	// There are two possibilities:
	// - We use a KMS -> There must be non-empty key ID and a KMS data key.
	// - We use a K/V -> There must be no key ID and no KMS data key.
	// Otherwise, the caller has passed an invalid argument combination.
	if keyID == "" && len(kmsKey) != 0 {
		logger.CriticalIf(context.Background(), errors.New("The key ID must not be empty if a KMS data key is present"))
	}

					expired++
					decommissioned++
					stopFn(errors.New("ILM expired object/version will be skipped"))
					continue
				}

				// any object with only single DEL marker we don't need
				// to decommission, just skip it, this also includes
				// any other versions that have already expired.
				remainingVersions := len(fivs.Versions) - expired