anchor.diff:    print('\nreturns: ${returnType.name}');
   }
   
  -void listInterfaces() {
  -  final type = 'Windows.Globalization.Calendar';
  +void listInterfaces([String type = 'Windows.Globalization.Calendar']) {
     final file = metadataFileContainingType(type);
     final winmdFile = WinmdFile(file);
   
  
positive.code: }
  
  // [uuid(CA30221D-86D9-40FB-A26B-D44EB7CF08EA)]
  void listGUID() {
    final type = 'Windows.Globalization.ICalendar';
    final file = metadataFileContainingType(type);
    final winmdFile = WinmdFile(file);
  
  
negative.code:   }
  }
  
  void listParameters([String type = 'Windows.Globalization.Calendar']) {
    final file = metadataFileContainingType(type);
    final winmdFile = WinmdFile(file);
  
    final winTypeDef = winmdFile.findTypeDef(type);
    final method = winTypeDef.findMethod('HourAsPaddedString');
  
    final parameters = method.parameters;
    print('${method.methodName} has '
  