docs: public void writeBasicDeclarations() throws RDFHandlerException {
  		for (Map.Entry<String, String> uriType : Vocabulary
  				.getKnownVocabularyTypes().entrySet()) {
  			this.rdfWriter.writeTripleUriObject(uriType.getKey(),
  					RdfWriter.RDF_TYPE, uriType.getValue());
  		}
  	}