code: func PodFitsHost(pod *v1.Pod, meta PredicateMetadata, nodeInfo *schedulernodeinfo.NodeInfo) (bool, []PredicateFailureReason, error) {
  	if len(pod.Spec.NodeName) == 0 {
  		return true, nil, nil
  	}
  	node := nodeInfo.Node()
  	if node == nil {
  		return false, nil, fmt.Errorf("node not found")
  	}
  	if pod.Spec.NodeName == node.Name {
  		return true, nil, nil
  	}
  	return false, []PredicateFailureReason{ErrPodNotMatchHostName}, nil
  }
docs: // PodFitsHost checks if a pod spec node name matches the current node.