code: func GetInTreeNameFromCSIName(pluginName string) (string, error) {
  	if plugin, ok := inTreePlugins[pluginName]; ok {
  		return plugin.GetInTreePluginName(), nil
  	}
  	return "", fmt.Errorf("Could not find In-Tree driver name for CSI plugin %v", pluginName)
  }
docs: // GetInTreeNameFromCSIName returns the name of the in-tree plugin superseded by
  // a CSI driver with the given name