protected void computeFeatureCallHighlighting(
     XAbstractFeatureCall featureCall, IHighlightedPositionAcceptor acceptor) {
   JvmIdentifiableElement feature = featureCall.getFeature();
   if (feature != null && !feature.eIsProxy()) {
     if (feature instanceof JvmField) {
       if (((JvmField) feature).isStatic()) {
         highlightFeatureCall(featureCall, acceptor, STATIC_FIELD);
       } else {
         highlightFeatureCall(featureCall, acceptor, FIELD);
       }
     } else if (feature instanceof JvmOperation && !featureCall.isOperation()) {
       JvmOperation jvmOperation = (JvmOperation) feature;
       if (jvmOperation.isStatic())
         highlightFeatureCall(featureCall, acceptor, STATIC_METHOD_INVOCATION);
     }
     if (!(featureCall instanceof XBinaryOperation
         || featureCall instanceof XUnaryOperation
         || featureCall instanceof XPostfixOperation)) {
       if (featureCall.isExtension()) {
         highlightFeatureCall(featureCall, acceptor, EXTENSION_METHOD_INVOCATION);
       } else {
         // Extensions without implicit first argument
         XExpression implicitReceiver = featureCall.getImplicitReceiver();
         if (implicitReceiver != null && implicitReceiver instanceof XAbstractFeatureCall) {
           if (isExtension(((XAbstractFeatureCall) implicitReceiver).getFeature()))
             highlightFeatureCall(featureCall, acceptor, EXTENSION_METHOD_INVOCATION);
         }
       }
     }
     if (feature instanceof JvmAnnotationTarget
         && DeprecationUtil.isDeprecated((JvmAnnotationTarget) feature)) {
       highlightFeatureCall(featureCall, acceptor, DEPRECATED_MEMBERS);
     }
   }
 }
 protected void highlightDeprecation(
     IHighlightedPositionAcceptor acceptor,
     EObject referencer,
     EReference reference,
     EObject resolvedReferencedObject) {
   if (resolvedReferencedObject instanceof JvmAnnotationTarget) {
     JvmAnnotationTarget annoTarget = (JvmAnnotationTarget) resolvedReferencedObject;
     if (DeprecationUtil.isDeprecated(annoTarget))
       highlightFeature(acceptor, referencer, reference, DEPRECATED_MEMBERS);
   }
 }