Symfony\Component\DependencyInjection\ContainerBuilder::getResources PHP Method

    public function getResources()
    {
        return array_unique($this->resources);
    }

 /**
  * Builds the container.
  * @param array $parameters
  */
 public function build($parameters = array())
 {
     // sort array by key to generate the container name
     ksort($parameters);
     // needed for new packages installed
     $composerClass = array_filter(get_declared_classes(), function ($item) {
         if (0 === strpos($item, 'ComposerAutoloaderInit')) {
             return true;
         }
     });
     $composerClass = array_pop($composerClass);
     // generate hash
     $parametersHash = md5(serialize($parameters) . $composerClass);
     $containerClass = 'Container' . $parametersHash;
     $isDebug = true;
     $file = sprintf('%s/ladybug_cache/%s.php', sys_get_temp_dir(), $parametersHash);
     $containerConfigCache = new ConfigCache($file, $isDebug);
     if (!$containerConfigCache->isFresh()) {
         $this->initializeContainer();
         $this->loadServices();
         $this->loadThemes();
         $this->loadPlugins();
         $this->setParameters($parameters);
         $this->container->compile();
         $dumper = new PhpDumper($this->container);
         $containerConfigCache->write($dumper->dump(array('class' => $containerClass)), $this->container->getResources());
     } else {
         require_once $file;
         $this->container = new $containerClass();
     }
 }