anchor.diff:    /// Returns a boolean value to prevent the client from re-authorizing itself
     /// for multiple tests.
     Future<bool> clientIsAuthorized() async {
  -    final File authFile = workDirectory?.childFile(fs.path.join(
  +    final File authFile = workDirectory.childFile(fs.path.join(
         'temp',
         'auth_opt.json',
  -    ));
  +    ))/*!*/;
   
       if(await authFile.exists()) {
         final String contents = await authFile.readAsString();
         final Map<String, dynamic> decoded = json.decode(contents) as Map<String, dynamic>;
  -      return !(decoded['GSUtil'] as bool);
  +      return !(decoded['GSUtil'] as bool/*!*/);
       }
       return false;
     }
  
positive.code:         rawResponse = await utf8.decodeStream(response);
          final List<dynamic> ignores = json.decode(rawResponse) as List<dynamic>;
          for(final dynamic ignore in ignores) {
            final List<String> ignoredQueries = (ignore['query'] as String).split('&');
            final String ignoredPullRequest = (ignore['note'] as String).split('/').last;
            final DateTime expiration = DateTime.parse(ignore['expires'] as String);
            // The currently failing test is in the process of modification.
            if (ignoredQueries.contains('name=$testName')) {
  
negative.code:   /// Returns a list of arguments for initializing a tryjob based on the testing
    /// environment.
    List<String> getCIArguments() {
      /*late*/ String/*!*/ pullRequest;
      /*late*/ String/*!*/ jobId;
      /*late*/ String cis;
  
      switch (ci/*!*/) {
        case ContinuousIntegrationEnvironment.luci:
          jobId = platform.environment['LOGDOG_STREAM_PREFIX'].split('/').last;
          final List<String> refs = platform.environment['GOLD_TRYJOB'].split('/');
  