public static Resource createDiagram(URI diagramURI, URI modelURI, final Application application, final Diagram appModelDiagram, IProgressMonitor progressMonitor) {

		TransactionalEditingDomain editingDomain = GMFEditingDomainFactory.INSTANCE.createEditingDomain();
		progressMonitor.beginTask(Messages.ApplicationDiagramEditorUtil_CreateDiagramProgressTask,3);
		
		final Resource diagramResource = editingDomain.getResourceSet().createResource(diagramURI);
		final Resource modelResource = editingDomain.getResourceSet().createResource(modelURI);

		final String diagramName = diagramURI.lastSegment();
		
		AbstractTransactionalCommand command = new AbstractTransactionalCommand(editingDomain, Messages.ApplicationDiagramEditorUtil_CreateDiagramCommandLabel,	Collections.EMPTY_LIST) {
			protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info)
					throws ExecutionException {
				
//checkpoint A				[b]Application model = application;[/b]				
//checkpoint B				modelResource.getContents().add(model);


//checkpoint C                    [b]Diagram diagram = appModelDiagram;[/b]				
				if (diagram != null) {
//checkpoint D				diagramResource.getContents().add(diagram);
					diagram.setName(diagramName);
					diagram.setElement(model);
				}
				try {
					modelResource.save(ApplicationDiagramEditorUtil.getSaveOptions());
					diagramResource.save(ApplicationDiagramEditorUtil.getSaveOptions());
				} catch (IOException e) {
					ApplicationDiagramEditorPlugin.getInstance().logError("Unable to store model and diagram resources", e); 
				}
				return CommandResult.newOKCommandResult();
			}
		};
		try {
			OperationHistoryFactory.getOperationHistory().execute(command,	new SubProgressMonitor(progressMonitor, 1), null);
		} catch (ExecutionException e) {
			ApplicationDiagramEditorPlugin.getInstance().logError("Unable to create model and diagram", e); 
		}
		setCharset(WorkspaceSynchronizer.getFile(modelResource));
		setCharset(WorkspaceSynchronizer.getFile(diagramResource));
		return diagramResource;
	}