public function register(Container $app)
 {
     $app['var_dumper.cloner'] = function ($app) {
         $cloner = new VarCloner();
         if (isset($app['debug.max_items'])) {
             $cloner->setMaxItems($app['debug.max_items']);
         }
         if (isset($app['debug.max_string_length'])) {
             $cloner->setMaxString($app['debug.max_string_length']);
         }
         return $cloner;
     };
     $app['data_collector.templates'] = $app->extend('data_collector.templates', function ($templates) {
         $templates[] = array('dump', '@Debug/Profiler/dump.html.twig');
         return $templates;
     });
     $app['data_collector.dump'] = function ($app) {
         return new DumpDataCollector($app['stopwatch'], $app['code.file_link_format']);
     };
     $app->extend('data_collectors', function ($collectors, $app) {
         $collectors['dump'] = function ($app) {
             return $app['data_collector.dump'];
         };
         return $collectors;
     });
     $app->extend('twig', function ($twig, $app) {
         if (class_exists('\\Symfony\\Bridge\\Twig\\Extension\\DumpExtension')) {
             $twig->addExtension(new DumpExtension($app['var_dumper.cloner']));
         }
         return $twig;
     });
     $app->extend('twig.loader.filesystem', function ($loader, $app) {
         $loader->addPath($app['debug.templates_path'], 'Debug');
         return $loader;
     });
     $app['debug.templates_path'] = function () {
         $r = new \ReflectionClass('Symfony\\Bundle\\DebugBundle\\DependencyInjection\\Configuration');
         return dirname(dirname($r->getFileName())) . '/Resources/views';
     };
 }