I have a custom Request Class defined in app.php

use My\Custom\HttpFoundation\Request;

$kernel = new AppKernel('prod', false);
$kernel->loadClassCache();
//$kernel = new AppCache($kernel);
$kernel->handle(Request::createFromGlobals())->send();

But when i use
{% render controller('BlogBundle:Post:list', { 'limit': 2 }), { 'alt': 'BlogBundle:Post:error' } %}

The request change to Symfony\Component\HttpFoundation\Request.