anchor.diff:    }
   
     /// Print information about how to use the server.
  -  void _printUsage(ArgParser parser, telemetry.Analytics analytics,
  -      {bool fromHelp = false}) {
  +  void _printUsage(
  +    ArgParser parser,
  +    telemetry.Analytics analytics, {
  +    bool fromHelp = false,
  +  }) {
       print('Usage: $BINARY_NAME [flags]');
       print('');
       print('Supported flags are:');
  
positive.code:       } on FormatException {
          print('Invalid port number: ${results[PORT_OPTION]}');
          print('');
          _printUsage(parser.parser, analytics);
          exitCode = 1;
          return null;
        }
  
negative.code:   @override
    void start(List<String> arguments, [SendPort sendPort]) {
      var parser = _createArgParser();
      var results = parser.parse(arguments);
  
      var analysisServerOptions = AnalysisServerOptions();
      analysisServerOptions.newAnalysisDriverLog =
  