public class AboutHandler {
	
	@Execute
	public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell shell, @Active AppPart a) {
		MessageDialog.openInformation(shell, "About", "e4 Application example.");
	}
	
	@CanExecute
	public boolean canExecute(MApplication app,  EModelService service, @Optional AppPart appPartInjected) {
	    PartImpl element = (PartImpl) service.find("myapp.part.0", app);
	    AppPart appPart = (AppPart) element.getObject();
            return true;
	}
}