code: def propagate(self, request: Request, clientName):
          
          if self.requests.has_propagated(request, self.name):
              logger.trace("{} already propagated {}".format(self, request))
          else:
              with self.metrics.measure_time(MetricsName.SEND_PROPAGATE_TIME):
                  self.requests.add_propagate(request, self.name)
                  propagate = self.createPropagate(request, clientName)
                  logger.debug("{} propagating request {} from client {}".format(self, request.key, clientName),
                               extra={"cli": True, "tags": ["node-propagate"]})
                  self.send(propagate)
docs: Broadcast a PROPAGATE to all other nodes
  
          :param request: the REQUEST to propagate