code: private static String serializedGraphForMessage(final Message message, final Resource subject) throws IOException {
  
          // serialize triples
          final ByteArrayOutputStream serializedGraph = new ByteArrayOutputStream();
          final Model model = createDefaultModel();
  
          // get info from jms message headers
          @SuppressWarnings("unchecked")
          final List<String> eventType = message.getHeader(FCREPO_EVENT_TYPE, emptyList(), List.class);
          final String dateTime = message.getHeader(FCREPO_DATE_TIME, EMPTY_STRING, String.class);
          @SuppressWarnings("unchecked")
          final List<String> agents = message.getHeader(FCREPO_AGENT, emptyList(), List.class);
          @SuppressWarnings("unchecked")
          final List<String> resourceTypes = message.getHeader(FCREPO_RESOURCE_TYPE, emptyList(), List.class);
          final String identifier = message.getHeader(FCREPO_URI, EMPTY_STRING, String.class);
          final Optional<String> premisType = getAuditEventType(eventType, resourceTypes);
  
          model.add( model.createStatement(subject, type, INTERNAL_EVENT) );
          model.add( model.createStatement(subject, type, PREMIS_EVENT) );
          model.add( model.createStatement(subject, type, PROV_EVENT) );
  
          // basic event info
          model.add( model.createStatement(subject, PREMIS_TIME, createTypedLiteral(dateTime, XSDdateTime)) );
          model.add( model.createStatement(subject, PREMIS_OBJ, createResource(identifier)) );
  
          agents.forEach(agent -> {
              model.add( model.createStatement(subject, PREMIS_AGENT, createTypedLiteral(agent, XSDstring)) );
          });
  
          premisType.ifPresent(rdfType -> {
              model.add(model.createStatement(subject, PREMIS_TYPE, createResource(rdfType)));
          });
  
          write(serializedGraph, model, NTRIPLES);
          return serializedGraph.toString("UTF-8");
      }
docs: Convert a Camel message to audit event description.
  @param message Camel message produced by an audit event
  @param subject RDF subject of the audit description