/**
  * @return array
  */
 public function getAssets()
 {
     return $this->assets->getAssets();
 }
 /**
  * @param AssetCollection $assetCollection
  *
  * @return string
  */
 public function renderCollection(AssetCollection $assetCollection)
 {
     return $this->_renderAssets($assetCollection->getAssets());
 }