code: func Version(name string, url string, kvdbOptions map[string]string) (string, error) {
  	lock.RLock()
  	defer lock.RUnlock()
  
  	if dsVersion, exists := datastoreVersions[name]; exists {
  		return dsVersion(url, kvdbOptions)
  	}
  	return "", ErrNotSupported
  }
docs: // Version returns the supported version for the provided kvdb endpoint.