return e, other.isDir() == e.isDir()
		}
		return other, other.isDir() == e.isDir()
	}
	eVers, eErr := e.xlmeta()
	oVers, oErr := other.xlmeta()
	if eErr != nil || oErr != nil {
		return nil, false
	}

	// check both fileInfo's have same number of versions, if not skip
	// the `other` entry.
	if len(eVers.versions) != len(oVers.versions) {
		eTime := eVers.latestModtime()
		oTime := oVers.latestModtime()

		return fmt.Errorf("handler %v, subroute:%v: %w", id.String(), s, ErrHandlerAlreadyExists)
	}
	m.handlers.subSingle[subID] = h
	// Copy so clients can also pick it up for other subpaths.
	m.handlers.subSingle[makeZeroSubHandlerID(id)] = h
	return nil
}

/*
// RegisterStateless will register a stateless handler that serves
// []byte -> stream of ([]byte, error) requests.

	Fresh bool `msg:"fr"` // indicates this is a first time call to write FileInfo.

	// Position of this version or object in a multi-object delete call,
	// no other caller must set this value other than multi-object delete call.
	// usage in other calls in undefined please avoid.
	Idx int `msg:"i"`

	// Combined checksum when object was uploaded.
	Checksum []byte `msg:"cs,allownil"`

				// to decommission, just skip it, this also includes
				// any other versions that have already expired.
				remainingVersions := len(fivs.Versions) - expired
				if version.Deleted && remainingVersions == 1 {
					decommissioned++
					stopFn(errors.New("DELETE marked object with no other non-current versions will be skipped"))
					continue
				}

				versionID := version.VersionID

			continue
		}
	}

	for _, k := range toRemove {
		delete(m, k)
		delete(m, strings.ToLower(k))
	}

	return m
}

// generates an ListBucketVersions response for the said bucket with other enumerated options.
func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delimiter, encodingType string, maxKeys int, resp ListObjectVersionsInfo, metadata metaCheckFn) ListVersionsResponse {

	defer cancel()
	st, err := remoteConn.NewStream(ctx, handlerTest, []byte(testPayload))
	errFatal(err)

	// Wait for the server to send the first response.
	<-serverSent

	// Now do 100 other requests to ensure that the server doesn't block.
	for i := 0; i < 100; i++ {
		_, err := remoteConn.Request(ctx, handlerTest2, []byte(testPayload))
		errFatal(err)
	}
	// Drain responses
	got := 0

// otherwise nil or an unexpected error is returned.
// The listPathOptions given will be checked and modified internally.
// Required important fields are Bucket, Prefix, Separator.
// Other important fields are Limit, Marker.
// List ID always derived from the Marker.
func (z *erasureServerPools) listPath(ctx context.Context, o *listPathOptions) (entries metaCacheEntriesSorted, err error) {

	for k := range config.drivercache {
		delete(config.drivercache, k)
	}
	// Remove existing tier configs
	for k := range config.Tiers {
		delete(config.Tiers, k)
	}
	// Copy over the new tier configs
	for tier, cfg := range newConfig.Tiers {
		config.Tiers[tier] = cfg
	}
	config.lastRefreshedAt = UTCNow()
	return nil
}

// Save saves tier configuration onto objAPI

		return nil, &NetworkError{Err: c.LastError()}
	}

	// client is still connected, attempt the request.

	// Shallow copy. We don't modify the *UserInfo, if set.
	// All other fields are copied.
	u := *c.url
	u.Path = path.Join(u.Path, method)
	u.RawQuery = values.Encode()

	req, err := c.newRequest(ctx, u, body)
	if err != nil {
		return nil, &NetworkError{Err: err}
	}

	err := xmlDecoder(r.Body, &locationConstraint, r.ContentLength)
	if err != nil && r.ContentLength != 0 {
		internalLogOnceIf(GlobalContext, err, "location-constraint-xml-parsing")
		// Treat all other failures as XML parsing errors.
		return "", ErrMalformedXML
	} // else for both err as nil or io.EOF
	location = locationConstraint.Location
	if location == "" {
		location = globalSite.Region
	}