private Node<OWLClass> nodeToOwlClassNode(au.csiro.ontology.Node n) {
        if(n == null) return new OWLClassNode();

        final Set<OWLClass> classes = new HashSet<>();

        for (Object eq : n.getEquivalentConcepts()) {
            classes.add(getOWLClass(eq));
        }

        return new OWLClassNode(classes);
    }
private Node < OWLClass > nodeToOwlClassNode ( au . csiro . ontology . Node n ) { if ( n == null ) return new OWLClassNode ( ) ; final Set < OWLClass > classes = new HashSet < > ( ) ; for ( Object eq : n . getEquivalentConcepts ( ) ) { classes . add ( getOWLClass ( eq ) ) ; } return new OWLClassNode ( classes ) ; }
Transforms a {@link ClassNode} into a {@link Node} of {@link OWLClass}es.

@param n may be null, in which case an empty Node is returned
@return