private function generateExpireCheckCache($expire_check_path)
 {
     $root_dir = dirname($this->container->getParameter('kernel.root_dir'));
     $fs = new \Symfony\Component\Filesystem\Filesystem();
     $bundles = array();
     foreach ($this->admin_generators as $key => $admin) {
         if (isset($bundles[$admin->bundle_name])) {
             continue;
         }
         $file = $admin->getFilename();
         $file = trim($fs->makePathRelative($file, $root_dir), '/');
         $bundles[$admin->bundle_name] = dirname($file) . '/';
         continue;
         if (!isset($dirs[$_dir])) {
             $dirs[$_dir] = array();
         }
         $_entity_file = basename($file);
         $dirs[$_dir][$_entity_file] = filemtime($admin->getFilename());
     }
     $dirs = array();
     foreach ($bundles as $entity_dir) {
         $finder = new \Symfony\Component\Finder\Finder();
         $finder->name('*.php');
         foreach ($finder->in($root_dir . '/' . $entity_dir) as $file) {
             $dirs[$entity_dir][$file->getRelativePathname()] = filemtime($file->getRealpath());
         }
     }
     $default_resources = array('app/config/symforce/admin.yml');
     foreach ($default_resources as $file) {
         $dirs[0][$file] = filemtime($root_dir . '/' . $file);
     }
     foreach ($this->expire_check_resources as $file) {
         $_file = trim($fs->makePathRelative($file, $root_dir), '/');
         if (!in_array($_file, $dirs[0])) {
             $dirs[0][$_file] = filemtime($file);
         }
     }
     /**
      * @todo add yml configure check 
      */
     \Dev::write_file($expire_check_path, '<' . '?php return ' . var_export($dirs, 1) . ';');
 }