docs: def compute_verdict(self, results):
          """
          Match results to the configured reject, quarantine and accept classes,
          and return a verdict based on that.
  
          The verdict classes are matched in the order: reject_classes,
          quarantine_classes, accept_classes. This means that you can configure
          different verdicts for different confidence results, for instance:
          reject_classes= Spam:0.99       # Reject obvious spam
          quarantine_classes = Spam:0.7   # Quarantine spam with confidence
                                          #   between 0.7 and 0.99
          accept_classes = Spam           # Accept low confidence spam (good
                                          #   for FP and retraining)
  
          Args:
          results -- A results dictionary from DspamClient.
  
          """
          if results['class'] in self.reject_classes:
              threshold = self.reject_classes[results['class']]
              if float(results['confidence']) >= threshold:
                  logger.debug(
                      '<{0}> Suggesting to reject the message based on DSPAM '
                      'results: user={1[user]}, class={1[class]}, '
                      'confidence={1[confidence]}'.format(self.id, results))
                  return self.VERDICT_REJECT
  
          if results['class'] in self.quarantine_classes:
              threshold = self.quarantine_classes[results['class']]
              if float(results['confidence']) >= threshold:
                  logger.debug(
                      '<{0}> Suggesting to quarantine the message based on '
                      'DSPAM results: user={1[user]}, class={1[class]}, '
                      'confidence={1[confidence]}'.format(self.id, results))
                  return self.VERDICT_QUARANTINE
  
          if results['class'] in self.accept_classes:
              threshold = self.accept_classes[results['class']]
              if float(results['confidence']) >= threshold:
                  logger.debug(
                      '<{0}> Suggesting to accept the message based on DSPAM '
                      'results: user={1[user]}, class={1[class]}, '
                      'confidence={1[confidence]}'.format(self.id, results))
                  return self.VERDICT_ACCEPT
  
          logger.debug(
              '<{0}> Suggesting to accept the message, no verdict class matched '
              'DSPAM results: user={1[user]}, class={1[class]}, '
              'confidence={1[confidence]}'.format(self.id, results))
          return self.VERDICT_ACCEPT