Symfony 2.5 "You requested a nonexistent service" siteTest.b "

There is no problem starting the workspace / app _dev.php. But when I try to run workspace / app.php I get:

"You requested a nonexistent service" siteTest.b "

I don't have the first clue what I am doing wrong.

app / config / config.yml:

imports:
    - { resource: parameters.yml }
    - { resource: security.yml }
framework:
    secret:          "%secret%"
    router:
        resource: "%kernel.root_dir%/config/routing.yml"
        strict_requirements: ~
    form:            ~
    csrf_protection: ~
    validation:      { enable_annotations: true }
    templating:
        engines: ['twig']
    default_locale:  "%locale%"
    trusted_hosts:   ~
    trusted_proxies: ~
    session:
        handler_id:  ~
    fragments:       ~
    http_method_override: true

      

        
        
        
      

    

CSI / site / TestBundle / Resources / config / services.yml:

parameters:
    siteTest.aa: Site\TestBundle\Controller\a

services:
    siteTest.b:
        class: %siteTest.aa%

      

        
        
        
      

    

src / Site / TestBundle / DependencyInjection / SiteTestExtension.php:

namespace Site\TestBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\Config\FileLocator;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;
use Symfony\Component\DependencyInjection\Loader;
class SiteTestExtension extends Extension
{
    /**
     * {@inheritDoc}
     */
    public function load(array $configs, ContainerBuilder $container)
    {
        $configuration = new Configuration();
        $config = $this->processConfiguration($configuration, $configs);

        $loader = new Loader\YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('services.yml');
    }
}

      

        
        
        
      

    

src / Site / TestBundle / Controller / a.php:

namespace Site\TestBundle\Controller;
class a {
    public function printTest() {
        var_dump('Test');
        exit;
    }
}

      

        
        
        
      

    

Cci / site / TestBundle / Controller / DefaultController.php:

namespace Site\TestBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Component\HttpFoundation\Response;

class DefaultController extends Controller
{
    public function indexAction()
    {
        $aaa = $this->get('siteTest.b');
        exit();
    }
}