anchor.diff:        '--luci',
       ];
   
  -    final ProcessResult result = await process.run(authCommand);
  +    final ProcessResult result = await _runCommand(authCommand);
   
       if (result.exitCode != 0) {
         final StringBuffer buf = StringBuffer()
  
positive.code:       ..._getMatchingArguments(testName, screenshotSize, isCanvaskitTest),
      ];
  
      final ProcessResult result = await process.run(imgtestCommand);
  
      final String resultStdout = result.stdout.toString();
      if (result.exitCode != 0 &&
  
negative.code:       throw Exception(buf.toString());
      }
  
      final ProcessResult result = await _runCommand(imgtestInitCommand);
  
      if (result.exitCode != 0) {
        final StringBuffer buf = StringBuffer()
  