/**
  * @see DynamicOptionListForm::readCache()
  */
 protected function readCache()
 {
     parent::readCache();
     WCF::getCache()->addResource('admin_tools_functions-' . PACKAGE_ID, WCF_DIR . 'cache/cache.admin_tools_functions-' . PACKAGE_ID . '.php', WCF_DIR . 'lib/system/cache/CacheBuilderAdminToolsFunction.class.php');
     $this->functions = WCF::getCache()->get('admin_tools_functions-' . PACKAGE_ID);
 }