// AttachableVolumePlugin is an extended interface of VolumePlugin and is used for volumes that require attachment
// to a node before mounting.
type AttachableVolumePlugin interface {
	DeviceMountableVolumePlugin
	NewAttacher() (Attacher, error)
	NewDetacher() (Detacher, error)
	// CanAttach tests if provided volume spec is attachable
	CanAttach(spec *Spec) (bool, error)
}