gistfile1.php

<?php
use Symfony\Component\HttpFoundation\Request;

// deze inject je
$router = ...; // router
$accessMap = ...; // security.access_map
$accessDecisionManager = ...; // security.access.decision_manager

$route = 'admin_homepage';
$url = $router->generate($route);
$request = Request::create($url);

list($attributes, $channel) = $accessMap->getPatterns($request);

if (null === $attributes) {
    return;
}

if ($this->accessDecisionManager->decide($token, $attributes, $request)) {
    // toon menu item
}
?>