code: func (config MessageConfig) values() (url.Values, error) {
  	v, err := config.BaseChat.values()
  	if err != nil {
  		return v, err
  	}
  	v.Add("text", config.Text)
  	v.Add("disable_web_page_preview", strconv.FormatBool(config.DisableWebPagePreview))
  	if config.ParseMode != "" {
  		v.Add("parse_mode", config.ParseMode)
  	}
  
  	return v, nil
  }
docs: // values returns a url.Values representation of MessageConfig.