code: def redeliver(self):
          
          self.consequence.answerReceived(self.answerValue,
                                          self.messageValue,
                                          self.sender,
                                          self.target)
          self.deleteFromStore()
docs: Re-deliver the answer to the consequence which previously handled it
          by raising an exception.
  
          This method is intended to be invoked after the code in question has
          been upgraded.  Since there are no buggy answer receivers in
          production, nothing calls it yet.