@Sumatera Model converter from ORM class to regular pojo class, the ORM term is a modelling class that doesn't like regular pojo, such like @Entity from JPA/Hibernate and so on. It can be used for mapping regular object, post data in request body where you cannot put ORM class directly in a parameter, or you cannot convert to json directly, or any other problem regarding it. You don't need anymore to create duplicate Dto / Pojo class which represent ORM class, just ...