anchor.diff:    }
   
     @override
  -  String get description => nullSafetyOnByDefault
  -      ? '$cmdDescription\n\n$migrationGuideLink'
  -      : '$cmdDescription\n\n$preFlagFlipCaveat\n\n$migrationGuideLink';
  +  String get description => '$cmdDescription\n\n$migrationGuideLink';
   
     @override
     String get invocation {
  
positive.code:     logger.stdout('Migrating ${options.directory}');
      logger.stdout('');
  
      if (!MigrateCommand.nullSafetyOnByDefault) {
        logger.stdout(MigrateCommand.preFlagFlipCaveat);
        logger.stdout('');
      }
  
      logger.stdout(MigrateCommand.migrationGuideLink);
      logger.stdout('');
  
  
negative.code:   static const String migrationGuideLink =
        'See https://dart.dev/go/null-safety-migration for a migration guide.';
  
    /// Return whether the SDK has null safety on by default.
    static bool get nullSafetyOnByDefault => IsEnabledByDefault.non_nullable;
  
  