Наследование: extends Symfony\Bundle\AsseticBundle\Factory\AssetFactory
 protected function getAssetFactory()
 {
     $assetFactory = new AssetFactory($this->getMock('\\Symfony\\Component\\HttpKernel\\KernelInterface'), $this->getMock('\\Symfony\\Component\\DependencyInjection\\ContainerInterface'), $this->getMock('\\Symfony\\Component\\DependencyInjection\\ParameterBag\\ParameterBagInterface'), '/root/dir/');
     $assetFactory->setConfigResolver($this->configResolver);
     $assetFactory->setDynamicSettingParser($this->parser);
     return $assetFactory;
 }