anchor.diff:  List<String> nameForEntry(Map entry) {
     final analyzerCode = entry['analyzerCode'];
     if (analyzerCode is String) {
  -    // TODO(danrubel): Revise to handle others such as ScannerErrorCode.
       if (!analyzerCode.startsWith('ParserErrorCode.')) {
         throw invalidAnalyzerCode;
       }
  
positive.code:         print('  ${analyzerToFasta.length} total');
        }
      }
    }
  }
  
negative.code: import 'package:analyzer/src/codegen/tools.dart';
  import 'package:analyzer/src/dart/error/syntactic_errors.dart';
  import 'package:front_end/src/testing/package_root.dart' as pkgRoot;
  import 'package:front_end/src/fasta/scanner.dart';
  import 'package:path/path.dart';
  import 'package:yaml/yaml.dart' show loadYaml;
  
  