code: func (i *Instances) CurrentNodeName(ctx context.Context, hostname string) (types.NodeName, error) {
  	md, err := getMetadata(i.opts.SearchOrder)
  	if err != nil {
  		return "", err
  	}
  	return types.NodeName(md.Name), nil
  }
docs: // CurrentNodeName implements Instances.CurrentNodeName
  // Note this is *not* necessarily the same as hostname.