EDIT

    public ImportDeduplicationHelper(ICdmRepository repository, STATE state) {

         this.repository = repository;

         if (repository == null){

         }

         if (state == null){

             logger.warn("State is null. Deduplication works without state.");

    private <T extends ICdmBase> Map<String, Set<T>> refreshSetMap(Map<String, Set<T>> oldMap,

            IService<T> service, ImportResult importResult) {

        Map<String, Set<T>> newMap = new HashMap<>();

        logger.debug("Start loading map");  //TODO debug only

        //create UUID set

        return newMap;

    }

//************************ PUTTER / GETTER *****************************/

    //REFERENCES

            }

            copyrightMapIsInitialized = true;

        }

    }

    private void putCopyright(String key, Rights right) {

            copyrightMap.put(key, rights);

        }

        rights.add(CdmBase.deproxy(right));

    }

    private String makeCopyrightKey(Rights right) {

            return right.getUuid().toString();

        }

    }

}