code: func (kl *Kubelet) getPodContainerDir(podUID types.UID, ctrName string) string {
  	return filepath.Join(kl.getPodDir(podUID), config.DefaultKubeletContainersDirName, ctrName)
  }
docs: // getPodContainerDir returns the full path to the per-pod data directory under
  // which container data is held for the specified pod.  This directory may not
  // exist if the pod or container does not exist.