DI\ContainerBuilder::setDefinitionCache PHP Method

    public function setDefinitionCache(Cache $cache)
    {
        $this->ensureNotLocked();
        $this->cache = $cache;
        return $this;
    }

 /**
  * @param $env
  * @return Container
  */
 public function getContainer($env)
 {
     $container = null;
     $builder = new ContainerBuilder(Container::class);
     //        $builder = new ContainerBuilder();
     foreach (glob(APP_HOME . '/conf/conf.d/*.conf.php') as $filename) {
         $builder->addDefinitions($filename);
     }
     $definitionsEnumFile = APP_HOME . '/conf/config.' . $env . '.php';
     if (file_exists($definitionsEnumFile)) {
         $builder->addDefinitions($definitionsEnumFile);
     }
     $builder->useAnnotations(false);
     $builder->useAutowiring(true);
     switch ($env) {
         case EnvironmentEnum::DEV:
             $builder->setDefinitionCache(new ArrayCache());
             break;
         case EnvironmentEnum::PROD:
         default:
             $cache = $this->getCache();
             $builder->setDefinitionCache($cache);
             $builder->writeProxiesToFile(true, APP_HOME . '/var/cache/proxies');
             break;
     }
     $container = $builder->build();
     return $container;
 }