public IReason updateNeeded(IUpdateContext context) {
    // retrieve name from pictogram model
    String pictogramName = null;
    PictogramElement pictogramElement = context.getPictogramElement();
    if (pictogramElement instanceof ContainerShape) {
      ContainerShape cs = (ContainerShape) pictogramElement;
      for (Shape shape : cs.getChildren()) {
        if (shape.getGraphicsAlgorithm() instanceof Text) {
          Text text = (Text) shape.getGraphicsAlgorithm();
          pictogramName = text.getValue();
        }
      }
    }

    // retrieve name from business model
    String businessName = null;
    Object bo = getBusinessObjectForPictogramElement(pictogramElement);
    if (bo instanceof EClass) {
      EClass eClass = (EClass) bo;
      businessName = eClass.getName();
    }

    // update needed, if names are different
    boolean updateNameNeeded =
        ((pictogramName == null && businessName != null)
            || (pictogramName != null && !pictogramName.equals(businessName)));
    if (updateNameNeeded) {
      return Reason.createTrueReason("Name is out of date");
    } else {
      return Reason.createFalseReason();
    }
  }
  public boolean update(IUpdateContext context) {
    // retrieve name from business model
    String businessName = null;
    PictogramElement pictogramElement = context.getPictogramElement();
    Object bo = getBusinessObjectForPictogramElement(pictogramElement);
    if (bo instanceof EClass) {
      EClass eClass = (EClass) bo;
      businessName = eClass.getName();
    }

    // Set name in pictogram model
    if (pictogramElement instanceof ContainerShape) {
      ContainerShape cs = (ContainerShape) pictogramElement;
      for (Shape shape : cs.getChildren()) {
        if (shape.getGraphicsAlgorithm() instanceof Text) {
          Text text = (Text) shape.getGraphicsAlgorithm();
          text.setValue(businessName);
          return true;
        }
      }
    }

    return false;
  }
 public boolean canUpdate(IUpdateContext context) {
   // return true, if linked business object is a EClass
   Object bo = getBusinessObjectForPictogramElement(context.getPictogramElement());
   return (bo instanceof EClass);
 }