code: func CheckNodeAffinity(pv *v1.PersistentVolume, nodeLabels map[string]string) error {
  	return checkVolumeNodeAffinity(pv, nodeLabels)
  }
docs: // CheckNodeAffinity looks at the PV node affinity, and checks if the node has the same corresponding labels
  // This ensures that we don't mount a volume that doesn't belong to this node