Sonata Admin Role Handler isGranted usage in parent Admin Class

BundleAdmin.php

<?php

class BundleAdmin extends Admin
{
    protected $parentAssociationMapping = 'contract';

    protected function configureListFields(ListMapper $listMapper)
    {
        $listMapper
            ->add('date', 'date');

        if (!$this->isChild()) {
            $listMapper->add('contract');
        }
    }
}

config.yml

sonata_admin:
   
    security:
        handler: sonata.admin.security.handler.role

ContractAdmin.php

<?php

use Sonata\AdminBundle\Datagrid\ListMapper;
use Symfony\Component\Security\Core\SecurityContextInterface;

class ContractAdmin extends Admin
{
    /**
     * Security Context
     * @var \Symfony\Component\Security\Core\SecurityContextInterface
     */
    protected $securityContext;

    public function setSecurityContext(SecurityContextInterface $securityContext)
    {
        $this->securityContext = $securityContext;
    }

    protected function configureListFields(ListMapper $listMapper)
    {
        $listMapper
            ->add('updatedAt', 'datetime');

        //if ($this->securityContext->isGranted('ROLE_SONATA_ADMIN_BUNDLE_LIST')) {
        if ($this->isGranted('ROLE_SONATA_ADMIN_BUNDLE_LIST')) {
            $listMapper
                ->add('_action', 'actions', array(
                    'actions' => array(
                        'show' => array(),
                        'edit' => array(),
                        'show_bundles' => array('template' => 'AcmeContractBundle:ContractAdmin:list__bundles.html.twig'),
                    ))
                )
            ;
        }
    }
}

security.yml

security:

    encoders:
        FOS\UserBundle\Model\UserInterface: sha512

    role_hierarchy:        
        ROLE_ADMIN:
            - ROLE_SONATA_ADMIN_CONTRACT_LIST
            - ROLE_SONATA_ADMIN_BUNDLE_LIST
        ROLE_SUPER_ADMIN:
            - ROLE_ADMIN

    access_decision_manager:
        strategy: unanimous

Related issue:
sonata-project/SonataAdminBundle#2605