@Override
 protected Object[] getComboFeatureValues() {
   nodes.clear();
   Set<DimensionNode> input = new HashSet<DimensionNode>();
   CubeQuery c = (CubeQuery) getAxisEntry().eContainer();
   if (c != null) { // during deletion
     UmlUimLinks currentUmlLinks = UmlUimLinks.getCurrentUmlLinks(getAxisEntry());
     Classifier clazz = currentUmlLinks.getRepresentedClass(c);
     if (clazz != null) {
       addDimensions(clazz, null, input);
     }
     for (DimensionNode dimensionNode : input) {
       if (!(isInUse(dimensionNode, c.getColumnAxis())
           || isInUse(dimensionNode, c.getRowAxis()))) {
         DimensionBinding dimensionBinding =
             dimensionNode.linkToInnermostDetail().toDimensionBinding();
         nodes.put(dimensionBinding, dimensionNode);
       }
     }
   }
   ArrayList<Object> result = new ArrayList<Object>(nodes.keySet());
   result.add("");
   return result.toArray();
 }
 protected Object[] getComboFeatureValues() {
   Collection<Object> results = new ArrayList<Object>();
   results.add("");
   Property p =
       (Property) UmlUimLinks.getCurrentUmlLinks(getEObject()).getUmlElement(getMeasureProperty());
   if (p != null) {
     for (EObject eo : p.getStereotypeApplications()) {
       EStructuralFeature sf = eo.eClass().getEStructuralFeature("aggregationFormulas");
       if (sf != null) {
         Collection<? extends EEnumLiteral> avFormulas =
             (Collection<? extends EEnumLiteral>) eo.eGet(sf);
         for (EEnumLiteral l : avFormulas) {
           results.add(AggregationFormula.getByName(l.getName()));
         }
         break;
       }
     }
   }
   return results.toArray();
 }