ClassNotFoundException: Class 'RoomlessAutomationObject' is not found or is abstract. (platform:/resource/HomeAuto/src/diagrams/newDiagram.diagram, 27, 59)	newDiagram.diagram	/HomeAuto/src/diagrams	line 27, column 59

 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;
        }
 
        
        RoomlessAutomationObject rlao = HomeAutomationFactory.eINSTANCE.createRoomlessAutomationObject();
       
        rlao.setName(newClassName);
 
        // do the add
        addGraphicalRepresentation(context, rlao);
 
        // return newly created business object(s)
        return new Object[] { rlao };
    }

 public Connection create(ICreateConnectionContext context) {
        Connection newConnection = null;
 
        // get RoomlessAutomationObjects which should be connected
        RoomlessAutomationObject source = getRoomlessAutomationObject(context.getSourceAnchor());
        RoomlessAutomationObject target = getRoomlessAutomationObject(context.getTargetAnchor());
 
        if (source != null && target != null) {
            // create new business object 
            AutomationLink addedLink = createAutomationLink(source, target);
            // add connection for business object
            AddConnectionContext addContext =
                new AddConnectionContext(context.getSourceAnchor(), context
                    .getTargetAnchor());
            addContext.setNewObject(addedLink);
            newConnection =
                (Connection) getFeatureProvider().addIfPossible(addContext);
        }
        
        return newConnection;
    }

 private AutomationLink createAutomationLink(RoomlessAutomationObject source, RoomlessAutomationObject target) {
        AutomationLink addedLink = HomeAutomationFactory.eINSTANCE.createAutomationLink();
        addedLink.setName("new Link");
        addedLink.setTarget(target);
        addedLink.setSource(source);
        source.getOutgoingLinks().add(addedLink);
        target.getIncomingLinks().add(addedLink);
        return addedLink;
   }