anchor.diff:      }
       if (host.type == InternetAddressType.IPv6)
         command.add('--ipv6');
  -    if (bundlePath != null) {
  -      command.add('--flutter-assets-dir=$bundlePath');
  -    }
  +
       command.add('--enable-checked-mode');
       command.addAll(<String>[
         '--enable-software-rendering',
  
positive.code:         packages: PackageMap.globalPackagesPath,
          enableObservatory: enableObservatory,
          startPaused: startPaused,
          bundlePath: _getBundlePath(finalizers, ourTestCount),
          observatoryPort: explicitObservatoryPort,
          serverPort: server.port,
        );
  
negative.code:     String executable,
      String testPath, {
      String packages,
      bool enableObservatory = false,
      bool startPaused = false,
      int observatoryPort,
  