Java Cloneable without an implementation

I am in the process of migrating to java from c++ and consider myself a java noob. I have been looking recently at a vast code base with several examples of the kind public class Myclass implements Cloneable{...} with no implementation of the clone function. I fail to understand the advantages of this pattern. Are there any? If you choose not to implement the clone function, why derive it from Cloneable? Also are there any lombok anotations which provide some default clone functions?