question: public < E , D > void addMappedEntityClass ( Class < E > entityClass , Class < D > dtoClass , JpaMapper < E , D > mapper ) { checkNotInitialized ( ) ; if ( mappings . containsKey ( dtoClass ) ) { throw new IllegalArgumentException ( dtoClass . getName ( ) + " is already registered" ) ; } mappings . put ( dtoClass , new MappedRegistration < > ( entityClass , dtoClass , mapper ) ) ; }
target:  Adds the given entity class which is mapped to a DTO with the provided mapper.