minor refactoring
minor refactoring

DURAARK/duraark-metadata,DURAARK/duraark-metadata,DURAARK/microservice-ifcmetadata,DURAARK/microservice-metadata-extraction,DURAARK/microservice-metadata-extraction,DURAARK/microservice-ifcmetadata,DURAARK/duraark-metadata,DURAARK/microservice-metadata-extraction,DURAARK/microservice-ifcmetadata