/**
  * @param \AssetsBundle\AssetFile\AssetFile $oAssetFile
  * @return string
  */
 public function filterAssetFile(\AssetsBundle\AssetFile\AssetFile $oAssetFile)
 {
     $oLessParser = new \lessc();
     $oLessParser->addImportDir(getcwd());
     $oLessParser->setAllowUrlRewrite(true);
     //Prevent time limit errors
     set_time_limit(0);
     return trim($oLessParser->compile($oAssetFile->getAssetFileContents()));
 }