/**
  * @static
  * @return AssetsManager instance
  */
 public static function getInstance()
 {
     if (self::$mInstance == false) {
         global $wgCdnStylePath, $wgStyleVersion, $wgAllInOne, $wgRequest;
         self::$mInstance = new AssetsManager($wgCdnStylePath, $wgStyleVersion, $wgRequest->getBool('allinone', $wgAllInOne), $wgRequest->getBool('allinone', $wgAllInOne));
     }
     return self::$mInstance;
 }