anchor.diff:  import 'file_generator_test.dart' as file_generator;
   import 'generated_message_test.dart' as generated_message;
   import 'hash_code_test.dart' as hash_code;
  +import 'high_tagnumber_test.dart' as high_tagnumber;
   import 'import_test.dart' as import_prefix;
  +import 'import_public_test.dart' as import_public;
   import 'indenting_writer_test.dart' as indenting_writer;
   import 'json_test.dart' as json;
   import 'leading_underscores_test.dart' as leading_underscores;
  
positive.code:   file_generator.main();
    generated_message.main();
    hash_code.main();
    import_prefix.main();
    indenting_writer.main();
    json.main();
    leading_underscores.main();
  
negative.code:   omit_message_names.main();
    protoc_options.main();
    repeated_field.main();
    reserved_names.main();
    service.main();
    service_generator.main();
    to_builder.main();
  