public function moveUpAction(Request $request)
    {
        $context = $this->loadContext($request);

        $resource = $context->getResource();

        $this->isGranted('EDIT', $resource);

        $this->move($resource, -1);

        return $this->redirectToReferer($this->generateUrl(
            $this->config->getRoute('list'),
            $context->getIdentifiers()
        ));
    }