anchor.diff:    _kOptionTarget,
     _kOptionPackages,
     _kOptionOutput,
  +  _kOptionHeader,
     _kOptionSnapshot,
     _kOptionDepfile,
     _kOptionWorking,
  
positive.code:     packagesPath: argResults[_kOptionPackages],
      includeRobotoFonts: true,
    );
    if (result != 0) {
      printError('Error building $outputPath: $result.');
    }
    exit(result);
  }
  
negative.code:     ..addOption(_kOptionTarget, help: 'The entry point into the app')
      ..addOption(_kOptionPackages, help: 'The .packages file')
      ..addOption(_kOptionOutput, help: 'The generated flx file')
      ..addOption(_kOptionHeader, help: 'The header of the flx file')
      ..addOption(_kOptionSnapshot, help: 'The generated snapshot file')
      ..addOption(_kOptionDepfile, help: 'The generated dependency file')
      ..addOption(_kOptionWorking,
  