type flexVolumeDetacher … var _ … var _ … // Detach is part of the volume.Detacher interface. func (d *flexVolumeDetacher) Detach(volumeName string, hostName types.NodeName) error { … } // UnmountDevice is part of the volume.Detacher interface. func (d *flexVolumeDetacher) UnmountDevice(deviceMountPath string) error { … }