code: def updateobjects(self, updatedvalues):
          
          if not self._updatedset:
              self.scheduler.emergesend(FlowUpdaterNotification(self, FlowUpdaterNotification.DATAUPDATED))
          self._updatedset.update(set(updatedvalues).intersection(self._savedresult))
docs: Force a update notification on specified objects, even if they are not actually updated
          in ObjectDB