public function removeContainerAction()
{
$container = $this->navigationManager->getContainer($this->params('container'));
$this->assertGranted('navigation.manage', $container);
$this->navigationManager->removeContainer($container->getId());
$this->navigationManager->flush();
$this->flashMessenger()->addSuccessMessage('The container was successfully removed');
return $this->redirect()->toReferer();
}
