code: def _handleLegacyResult(result):
      
      if not isinstance(result, dict):
          warnings.warn('The Gerrit status callback uses the old way to '
                        'communicate results.  The outcome might be not what is '
                        'expected.')
          message, verified, reviewed = result
          result = makeReviewResult(message,
                                    (GERRIT_LABEL_VERIFIED, verified),
                                    (GERRIT_LABEL_REVIEWED, reviewed))
      return result
docs: make sure the result is backward compatible