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.

* Fixed racy panics when using fake watches with ObjectTracker ([#61195](https://github.com/kubernetes/kubernetes/pull/61195), [@grantr](https://github.com/grantr))
* Fixed mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufscied](https://github.com/gnufied))

* PodSpecs containing parent directory references such as `..` (for example, `../bar`) in hostPath volume path or in volumeMount subpaths must be changed to the simple absolute path. Backsteps `..` are no longer allowed.([#47290](https://github.com/kubernetes/kubernetes/pull/47290), [@jhorwit2](https://github.com/jhorwit2)).


### API Machinery

    * - Don't generate empty record for externalName service.
    * - Add validation for upstreamNameserver port.
    * - Update go version to 1.9.3.
* Fix mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufied](https://github.com/gnufied))

              mountPath: {{ $mountPath }}-{{ $i }}
              {{- if and $penabled $subPath }}
              subPath: {{ $subPath }}
              {{- end }}
            {{- end }}
            {{- else }}
            - name: export
              mountPath: {{ $mountPath }}
              {{- if and $penabled $subPath }}
              subPath: {{ $subPath }}
              {{- end }}
            {{- end }}
            {{- end }}

* Support new NODE_OS_DISTRIBUTION 'custom' on GCE ([#61235](https://github.com/kubernetes/kubernetes/pull/61235), [@yguo0905](https://github.com/yguo0905))
* Fix mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufied](https://github.com/gnufied))

  If the `subPath` is a file rather than a directory, Pods may fail to start ([#45613](https://github.com/kubernetes/kubernetes/issues/45613)).

  **Do not upgrade to v1.6.3** if your cluster may run Pods with such subPaths.

## Downloads for v1.6.3


filename | sha256 hash
-------- | -----------
[kubernetes.tar.gz](https://dl.k8s.io/v1.6.3/kubernetes.tar.gz) | `0af5914fcea36b3c65c8185f31e94b2839eaed52dfdd666d31dfa14534a7d69c`

* Fix mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufied](https://github.com/gnufied))

              readOnly: true
            - name: export
              mountPath: {{ .Values.mountPath }}
              {{- if and .Values.persistence.enabled .Values.persistence.subPath }}
              subPath: "{{ .Values.persistence.subPath }}"
              {{- end }}
            {{- if .Values.extraSecret }}
            - name: extra-secret
              mountPath: "/tmp/minio-config-env"
            {{- end }}

$penabled }} {{- if (gt $drivesPerNode 1) }} {{- range $i := until $drivesPerNode }} - name: export-{{ $i }} mountPath: {{ $mountPath }}-{{ $i }} {{- if and $penabled $subPath }} subPath: {{ $subPath }} {{- end }} {{- end }} {{- else }} - name: export mountPath: {{ $mountPath }} {{- if and $penabled $subPath }} subPath: {{ $subPath }} {{- end }} {{- end }} {{- end }} {{- include "minio.tlsKeysVolumeMount" . | indent 12 }} ports: - name: {{ $scheme }} containerPort: {{ .Values.minioAPIPort }} - name:...