JMSSerializer provider for Silex

SerializerServiceProvider.php

<?php 

namespace App\Providers;

use Pimple\Container;
use Pimple\ServiceProviderInterface;
use JMS\Serializer\SerializerBuilder;
use Doctrine\Common\Annotations\AnnotationRegistry;
use JMS\Serializer\SerializationContext;

class SerializerServiceProvider implements ServiceProviderInterface
{
    /**
     * @param Container $app
     */
    public function register(Container $app)
    {
        $root = realpath($app['path.root'] .'/../');

        AnnotationRegistry::registerAutoloadNamespace('JMS\Serializer\Annotation', $root. "/vendor/jms/serializer/src");

        $app['serializer'] = function () use ($app) {
            $serializer =  SerializerBuilder::create();

            if ($app['debug'] == false) {
                $serializer->setCacheDir($app['path.app'] . '/../cache');
            }

            return $serializer->build();
        };

        $app['serializer.context'] = function () {
          return SerializationContext::create()->enableMaxDepthChecks();
        };
    }

    /**
     * @param Container $app
     */
    public function boot(Container $app)
    {
    }
}