code: func (s *Server) stopAllPodSandboxes(ctx context.Context) {
  	logrus.Debugf("stopAllPodSandboxes")
  	for _, sb := range s.ContainerServer.ListSandboxes() {
  		pod := &pb.StopPodSandboxRequest{
  			PodSandboxId: sb.ID(),
  		}
  		if _, err := s.StopPodSandbox(ctx, pod); err != nil {
  			logrus.Warnf("could not StopPodSandbox %s: %v", sb.ID(), err)
  		}
  	}
  }
docs: // stopAllPodSandboxes removes all pod sandboxes