anchor.diff:      ..addCommand("list-versions")
       ..addCommand("version")
       ..addFlag("help", negatable: false, help: "Shows this documentation");
  +
  +
  +  String get _dbConfigFormat {
  +    return "username: username\npassword: password\nhost: host\nport: port\ndatabaseName: name\n";
  +  }
   
   
     Future<int> handle(ArgResults argValues) async {
  
positive.code:   }
  
    Future<int> printVersion() async {
      try {
        var current = await executor.persistentStore.schemaVersion;
        print("Current version: $current");
  
negative.code: 
  
    Future cleanup() async {
      await executor.persistentStore?.close();
    }
  
    String _getPackageName(Uri projectURI) {
      var yamlContents = new File.fromUri(projectURI.resolve("pubspec.yaml")).readAsStringSync();
  