private void createModels(String path) {
    	umlModel = new UmlModel();
    	diModel = new DiModel();
    	notationModel = new NotationModel();
    	modelset = new ModelSet();
		try {
			modelset.registerModel(umlModel);
			modelset.registerModel(diModel);
			modelset.registerModel(notationModel);
			modelset.createsModels(jsProject.getFile(path));
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

                 EObject model = null;
                 /*
		 * Get root element
		 */
		try {
			model = UmlUtils.getUmlModel().lookupRoot();
		} catch (NotFoundException e1) {
			e1.printStackTrace();
		} catch (NullPointerException ne) {
		}

		if (model != null) {

			/*
			 * Get the model package
			 */
			modelpackage = (org.eclipse.uml2.uml.Package) model;

                        /*
			 * Add new elements to the model
			 */
			TransactionalEditingDomain ted = TransactionUtil
					.getEditingDomain(model);
			ted.getCommandStack().execute(new RecordingCommand(ted) {

				modelpackage.createOwnedInterface("Itf");

                        }
                }

	public void createAndOpenInterfaceDiagram() {
		boolean creationDiagram = true;
		IEditorPart editorPart = getActiveEditor();
		ServicesRegistry serviceRegistry = (ServicesRegistry) editorPart
				.getAdapter(ServicesRegistry.class);
		try {
			IPageMngr pageMngr = ServiceUtils.getInstance().getIPageMngr(
					serviceRegistry);
			/*
			 * Detect if the interface diagram is already created
			 */
			for (Object id : pageMngr.allPages()) {
				DiagramImpl page = (DiagramImpl) id;
				if (page.getName().contains("Class Diagram")) {
					/*
					 * Set the focus of the interface diagram
					 */
					if (pageMngr.isOpen(id)) {
						pageMngr.closePage(id);
					}
					pageMngr.openPage(id);
					creationDiagram = false;
				}
			}
		} catch (ServiceException e) {
			e.printStackTrace();
		}
		/*
		 * Creation of the interface diagram
		 */
		if (creationDiagram == true) {
			DiResourceSet diResourceSet = EditorUtils.getDiResourceSet();
			CreateClassDiagramCommand command = new CreateClassDiagramCommand();
			command.createDiagram(diResourceSet, null, "Class Diagram");
		}
	}