code: def sendResult(self, future):
          
          future = copy.copy(future)
  
          # Remove the (now) extraneous elements from future class
          future.callable = future.args = future.kargs = future.greenlet = None
  
          if not future.sendResultBack:
              # Don't reply back the result if it isn't asked
              future.resultValue = None
  
          self._sendReply(
              future.id.worker,
              pickle.dumps(
                  future,
                  pickle.HIGHEST_PROTOCOL,
              ),
          )
docs: Send a terminated future back to its parent.