code: func (srv *Instance) MachineTransition(name string, version string, path string, id string, transition string) error {
  	if srv.machines == nil {
  		return fmt.Errorf("Autonomous Agent host not initialized")
  	}
  
  	return srv.machines.Transition(name, version, path, id, transition)
  }
docs: // MachineTransition sends a transition event to a specific running machine instance