@Execute
	public void execute(Shell shell){
		FileDialog dialog = new FileDialog(shell);
		String fileName = dialog.open();
		if (fileName.endsWith(".lxml")) {
			MPart part = partService.createPart("uk.co.xbundle.scopist.application.partdescriptor.lxmleditor");
			part.setLabel(fileName);
			
			MPartStack editorStack = (MPartStack) modelService.find("uk.co.xbundle.scopist.application.partstack.editors", app);
			editorStack.getChildren().add(part);
			partService.showPart(part, PartState.ACTIVATE);
			
		}
		
	}