"secretFile": "secretFileValue",
              "secretRef": {
                "name": "nameValue"
              },
              "readOnly": true
            },
            "flocker": {
              "datasetName": "datasetNameValue",
              "datasetUUID": "datasetUUIDValue"
            },
            "downwardAPI": {
              "items": [
                {

    flexVolume:
      driver: driverValue
      fsType: fsTypeValue
      options:
        optionsKey: optionsValue
      readOnly: true
      secretRef:
        name: nameValue
    flocker:
      datasetName: datasetNameValue
      datasetUUID: datasetUUIDValue
    gcePersistentDisk:
      fsType: fsTypeValue
      partition: 3
      pdName: pdNameValue
      readOnly: true

  map<string, string> options = 5;
}

// Represents a Flocker volume mounted by the Flocker agent.
// One and only one of datasetName and datasetUUID should be set.
// Flocker volumes do not support ownership management or SELinux relabeling.
message FlockerVolumeSource {
  // datasetName is Name of the dataset stored as metadata -> name on the dataset for Flocker
  // should be considered as deprecated
  // +optional

	// CephFS represents a Cephfs mount on the host that shares a pod's lifetime
	// +optional
	CephFS *CephFSVolumeSource

	// Flocker represents a Flocker volume attached to a kubelet's host machine. This depends on the Flocker control service being running
	// +optional
	Flocker *FlockerVolumeSource

	// DownwardAPI represents metadata about the pod that should populate this volume
	// +optional

}

var map_FlockerVolumeSource = map[string]string{
	"":            "Represents a Flocker volume mounted by the Flocker agent. One and only one of datasetName and datasetUUID should be set. Flocker volumes do not support ownership management or SELinux relabeling.",
	"datasetName": "datasetName is Name of the dataset stored as metadata -> name on the dataset for Flocker should be considered as deprecated",

		}
	}
	if source.Flocker != nil {
		if numVolumes > 0 {
			allErrs = append(allErrs, field.Forbidden(fldPath.Child("flocker"), "may not specify more than 1 volume type"))
		} else {
			numVolumes++
			allErrs = append(allErrs, validateFlockerVolumeSource(source.Flocker, fldPath.Child("flocker"))...)
		}
	}
	if source.PersistentVolumeClaim != nil {
		if numVolumes > 0 {

	// +optional
	CephFS *CephFSVolumeSource `json:"cephfs,omitempty" protobuf:"bytes,14,opt,name=cephfs"`
	// flocker represents a Flocker volume attached to a kubelet's host machine. This depends on the Flocker control service being running
	// +optional
	Flocker *FlockerVolumeSource `json:"flocker,omitempty" protobuf:"bytes,15,opt,name=flocker"`
	// downwardAPI represents downward API about the pod that should populate this volume
	// +optional

  map<string, string> options = 5;
}

// Represents a Flocker volume mounted by the Flocker agent.
// One and only one of datasetName and datasetUUID should be set.
// Flocker volumes do not support ownership management or SELinux relabeling.
message FlockerVolumeSource {
  // datasetName is Name of the dataset stored as metadata -> name on the dataset for Flocker
  // should be considered as deprecated
  // +optional

      "description": "Represents a Flocker volume mounted by the Flocker agent. One and only one of datasetName and datasetUUID should be set. Flocker volumes do not support ownership management or SELinux relabeling.",
      "properties": {
        "datasetName": {
          "description": "Name of the dataset stored as metadata -> name on the dataset for Flocker should be considered as deprecated",
          "type": "string"

	var wl RWMutex
	var rl Locker
	wlocked := make(chan bool, 1)
	rlocked := make(chan bool, 1)
	rl = wl.RLocker()
	n := 10
	go func() {
		for i := 0; i < n; i++ {
			rl.Lock()
			rl.Lock()
			rlocked <- true
			wl.Lock()
			wlocked <- true
		}
	}()
	for i := 0; i < n; i++ {
		<-rlocked
		rl.Unlock()
		select {
		case <-wlocked:
			t.Fatal("RLocker() didn't read-lock it")