code: func (s *ConfigService) GetVersion() (string, *Response, error) {
  	u := "config/server/version"
  	return getStringResponseWithoutOptions(s.client, u)
  }
docs: // GetVersion returns the version of the Gerrit server.
  //
  // Gerrit API docs: https://gerrit-review.googlesource.com/Documentation/rest-api-config.html#get-version