// create normalized tags for multiple control plane revisions
		for _, icp := range *icps {
			if icp.Revision != revision {
				continue
			}
			tagVer, err := GetTagVersion(icp.Info.GitTag)
			if err != nil {
				return err
			}
			icpTags = append(icpTags, tagVer)
		}
		// sort different versions of control plane revisions
		sort.Strings(icpTags)
		// capture latest revision installed for comparison

	it := gcs.client.Bucket(gcs.Bucket).Objects(ctx, &storage.Query{
		Delimiter: "/",
		Prefix:    gcs.Prefix,
		Versions:  false,
	})
	pager := iterator.NewPager(it, 1, "")
	gcsObjects := make([]*storage.ObjectAttrs, 0)
	_, err := pager.NextPage(&gcsObjects)
	if err != nil {
		return false, gcsToObjectError(err, gcs.Bucket, gcs.Prefix)
	}
	if len(gcsObjects) > 0 {
		return true, nil
	}

//	}
//	ETag = ETag.Format()
func (e ETag) Format() ETag {
	if !e.IsEncrypted() {
		return e
	}
	return e[len(e)-16:]
}

var _ Tagger = ETag{} // compiler check

// ETag returns the ETag itself.
//
// By providing this method ETag implements
// the Tagger interface.
func (e ETag) ETag() ETag { return e }

// FromContentMD5 decodes and returns the Content-MD5