public Object[] create(ICreateContext context) {
        // ask user for EClass name
        String newClassName = ExampleUtil.askString(TITLE, USER_QUESTION, "");
        if (newClassName == null || newClassName.trim().length() == 0) {
            return EMPTY;
        }
 
        // create EClass
        EClass newClass = EcoreFactory.eINSTANCE.createEClass();
        // Add model element to resource.
        // We add the model element to the resource of the diagram for
        // simplicity's sake. Normally, a customer would use its own
        // model persistence layer for storing the business model separately.
        getDiagram().eResource().getContents().add(newClass);
        newClass.setName(newClassName);
 
        // do the add
        addGraphicalRepresentation(context, newClass);
 
        // return newly created business object(s)
        return new Object[] { newClass };
    }