code: def handleIncomingReply(self, observer_name, reqId, frm, result,
                              numReplies):
          
          preparedReq = self._prepared.get((result[IDENTIFIER], reqId))
          if not preparedReq:
              raise RuntimeError('no matching prepared value for {},{}'.
                                 format(result[IDENTIFIER], reqId))
          typ = result.get(TXN_TYPE)
          if typ and typ in self.replyHandler:
              self.replyHandler[typ](result, preparedReq)
docs: Called by an external entity, like a Client, to notify of incoming
          replies
          :return: