anchor.diff:  
     for (String service in services) {
       print('\nDeploying $service...\n');
  -    await new _ServiceDeployer(service, newVersion, deleteOld, migrateTraffic)
  +    await new _ServiceDeployer(
  +            service, newVersion, deleteOld, migrateTraffic, stopFirst)
           .deploy();
     }
   
  
positive.code: void die(String msg) {
    print('$msg:');
    print('deploy.dart ( app | analyzer | dartdoc | search | all ) '
        '[ --delete-old ] [ --migrate ]');
    exit(1);
  }
  
  
negative.code:   final String newVersion;
    final bool deleteOld;
    final bool migrateTraffic;
    final bool stopFirst;
    String _oldVersion;
  
    _ServiceDeployer(this.service, this.newVersion, this.deleteOld,
        this.migrateTraffic, this.stopFirst)
        : project = Platform.environment['GCLOUD_PROJECT'] {
      if (project == null) {
        throw new StateError('GCLOUD_PROJECT must be set!');
  