Reusable AbstractController with shortcuts for frequently used methods

AbstractController

<?php

namespace KP\MainBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;

/**
 * Class AbstractController
 *
 * @package KP\MainBundle\Controller
 */
abstract class AbstractController extends Controller
{
    /**
     * @return \Symfony\Component\Security\Core\SecurityContext
     */
    public function getSecurityContext()
    {
        return $this->container->get('security.context');
    }

    /**
     * @param string $permission
     * @param null   $domainObject
     *
     * @return bool
     */
    public function isGranted($permission, $domainObject = null)
    {
        return $this->getSecurityContext()->isGranted($permission, $domainObject);
    }

    /**
     * @param string|null $name
     *
     * @return \Doctrine\ORM\EntityManager
     */
    public function getManager($name = null)
    {
        return $this->getDoctrine()->getManager($name);
    }

    /**
     * @return \FOS\UserBundle\Model\UserManager
     */
    public function getUserManager()
    {
        return $this->container->get('fos_user.user_manager');
    }

    /**
     * Add new flash message to the FlashBag
     *
     * @param string $type
     * @param string $message
     */
    public function addFlash($type, $message)
    {
        $this->container->get('session')->getFlashBag()->add($type, $message);
    }
}