* @param desc
* @return
*/
private Concept getConcept(OWLClassExpression desc) {
final Stack<Concept> stack = new Stack<Concept>();
desc.accept(new OWLClassExpressionVisitor() {
private void unimplemented(OWLClassExpression e) {
String message = "The class expression "+ e.getClassExpressionType().getName()+
" is not currently supported by Snorocket.";
throw new UnsupportedOperationException(message);