code: func RetrieveValidatedConfigInfo(filepath, clustername string) (*clientcmdapi.Config, error) {
  	config, err := clientcmd.LoadFromFile(filepath)
  	if err != nil {
  		return nil, err
  	}
  	return ValidateConfigInfo(config, clustername)
  }
docs: // RetrieveValidatedConfigInfo connects to the API Server and makes sure it can talk
  // securely to the API Server using the provided CA cert and
  // optionally refreshes the cluster-info information from the cluster-info ConfigMap