anchor.diff:      // and output the result.
       var annotatedContent =
           updateErrorExpectations(contentWithoutMarkers, errors[0]);
  -    var writeToFile = results["write"] as bool;
       if (writeToFile) {
         await testFile.writeAsString(annotatedContent);
         print("Converted test '${test.path.toNativePath()}'.");
  
positive.code: 
  Future<List<StaticError>> getErrors(
      List<String> options, String filePath) async {
    return [
      ...await runAnalyzer(filePath, options),
      ...await runCfe(filePath, options)
    ];
  }
  
  bool areSameErrors(List<StaticError> first, List<StaticError> second) {
  
negative.code:       errors.add(await getErrors(options, test.path.toNativePath()));
      }
      if (errors[1].isNotEmpty) {
        throw UnableToConvertException("internal error: errors in '/none' test");
      }
      // Check that the multi-test generates the same errors as all sub-tests
      // together - otherwise converting the test would be unsound.
  