code: def Log(self, format_str, *args):
      
      log_entry = rdf_flow_objects.FlowLogEntry(
          client_id=self.rdf_flow.client_id,
          flow_id=self.rdf_flow.flow_id,
          hunt_id=self.rdf_flow.parent_hunt_id,
          message=format_str % args)
      data_store.REL_DB.WriteFlowLogEntries([log_entry])
      if self.rdf_flow.parent_hunt_id:
        db_compat.ProcessHuntFlowLog(self.rdf_flow, format_str % args)
docs: Logs the message using the flow's standard logging.
  
      Args:
        format_str: Format string
        *args: arguments to the format string