static function success()
 {
     if (ufront_core_SurpriseTools::$s === null) {
         ufront_core_SurpriseTools::$s = tink_core__Future_Future_Impl_::sync(tink_core_Outcome::Success(tink_core_Noise::$Noise));
     }
     return ufront_core_SurpriseTools::$s;
 }