klog.Warning(logPrefix(d.plugin.flexVolumePlugin), "using default WaitForDetach for device ", devicePath)
	return nil
}

// UnmountDevice is part of the volume.Detacher interface.
func (d *detacherDefaults) UnmountDevice(deviceMountPath string) error {
	klog.Warning(logPrefix(d.plugin.flexVolumePlugin), "using default UnmountDevice for device mount path ", deviceMountPath)

	_, err := call.Run()
	if isCmdNotSupportedErr(err) {
		return (*detacherDefaults)(d).Detach(volumeName, hostName)
	}
	return err
}

// UnmountDevice is part of the volume.Detacher interface.
func (d *flexVolumeDetacher) UnmountDevice(deviceMountPath string) error {

	pathExists, pathErr := mount.PathExists(deviceMountPath)
	if !pathExists {

	defer t.Close()

	plugin, rootDir := testPlugin(t)
	plugin.runner = fakeRunner(
		assertDriverCall(t, notSupportedOutput(), unmountDeviceCmd,
			rootDir+"/mount-dir"),
	)

	d, _ := plugin.NewDetacher()
	d.UnmountDevice(rootDir + "/mount-dir")

	return plugin.NewDetacher()
}

func (detacher *fcDetacher) Detach(volumeName string, nodeName types.NodeName) error {
	return nil
}

func (detacher *fcDetacher) UnmountDevice(deviceMountPath string) error {
	// Specify device name for DetachDisk later
	devName, _, err := mount.GetDeviceNameFromMount(detacher.mounter, deviceMountPath)
	if err != nil {

	return plugin.NewDetacher()
}

func (detacher *iscsiDetacher) Detach(volumeName string, nodeName types.NodeName) error {
	return nil
}

func (detacher *iscsiDetacher) UnmountDevice(deviceMountPath string) error {
	unMounter := volumeSpecToUnmounter(detacher.mounter, detacher.host, detacher.plugin)
	err := detacher.manager.DetachDisk(*unMounter, deviceMountPath)
	if err != nil {

	isAttached = "isattached"

	attachCmd        = "attach"
	waitForAttachCmd = "waitforattach"
	mountDeviceCmd   = "mountdevice"

	detachCmd        = "detach"
	unmountDeviceCmd = "unmountdevice"

	mountCmd   = "mount"
	unmountCmd = "unmount"

	expandVolumeCmd = "expandvolume"
	expandFSCmd     = "expandfs"

	// Option keys
	optionFSType         = "kubernetes.io/fsType"