public boolean isOWL2DLOntologyID ( ) { return ! ontologyIRI . isPresent ( ) || ! ontologyIRI . get ( ) . isReservedVocabulary ( ) && ( ! versionIRI . isPresent ( ) || ! versionIRI . get ( ) . isReservedVocabulary ( ) ) ; }
Determines if this is a valid OWL 2 DL ontology ID . To be a valid OWL 2 DL ID the ontology IRI and version IRI must not be reserved vocabulary .