code: def set_agent(self, short_name, client_id):
          
  
          if short_name not in self.services:
              raise ArgumentError("Unknown service name", short_name=short_name)
  
          self.agents[short_name] = client_id
docs: Register a client id that handlers commands for a service.
  
          Args:
              short_name (str): The name of the service to set an agent
                  for.
              client_id (str): A globally unique id for the client that
                  should receive commands for this service.