func (lens Lens) Callback(artifacts []lenses.Artifact, resourceDir string, data string) string {
	return ""
}
func (lens Lens) Callback(artifacts []lenses.Artifact, resourceDir string, data string) string {
	return ""
}
func ( lens Lens ) Callback ( artifacts [ ] lenses . Artifact , resourceDir string , data string ) string { return " " }
// Callback does nothing.
Callback does nothing .