private static int compareModelVersions(String first, String second) {
        // we use a dedicated comparator because we control our model version scheme.
        String[] firstSegments = first.split("\\.");
        String[] secondSegments = second.split("\\.");
        for (int i = 0; i < Math.max(firstSegments.length, secondSegments.length); i++) {
            int result = Long.valueOf(i < firstSegments.length ? firstSegments[i] : "0")

		opts.VersionID = ""
	}
	if crypto.S3.IsEncrypted(srcObjInfo.UserDefined) {
		opts.ServerSideEncryption = encrypt.NewSSE()
	}
	slc := strings.Split(srcObjInfo.ETag, "-")
	if len(slc) == 2 {
		partsCount, err := strconv.Atoi(slc[1])
		if err != nil {
			return err
		}
		return r.copyWithMultipartfromSource(ctx, api, core, srcObjInfo, opts, partsCount)
	}

		return true
	})
	return policies
}

// converts a mapped policy into a slice of distinct policies
func (mp MappedPolicy) toSlice() []string {
	var policies []string
	for _, policy := range strings.Split(mp.Policies, ",") {
		if strings.TrimSpace(policy) == "" {
			continue
		}
		policies = append(policies, policy)
	}
	return policies
}

func (mp MappedPolicy) policySet() set.StringSet {

		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
		BasicConstraintsValid: true,
	}

	hosts := strings.Split(host, ",")
	for _, h := range hosts {
		if ip := net.ParseIP(h); ip != nil {
			template.IPAddresses = append(template.IPAddresses, ip)
		} else {
			template.DNSNames = append(template.DNSNames, h)
		}

	}
	// return errors if any during deletion
	return reduceWriteQuorumErrs(ctx, g.Wait(), objectOpIgnoredErrs, writeQuorum)
}

// DeleteObjects deletes objects/versions in bulk, this function will still automatically split objects list
// into smaller bulks if some object names are found to be duplicated in the delete list, splitting
// into smaller bulks will avoid holding twice the write lock of the duplicated object names.

			}
		}
	}

	// Set skipParent to skip mkdirAll() calls for deeply nested objects
	// - if its an overwrite
	// - if its a versioned object
	//
	// This can potentiall reduce syscalls by strings.Split(path, "/")
	// times relative to the object name.
	skipParent := dstVolumeDir
	if len(dstBuf) > 0 {
		skipParent = pathutil.Dir(dstFilePath)
	}

	var reqVID string
	if fi.VersionID == "" {