code: func (c *Gcd) CloseTab(target *ChromeTarget) error {
  	target.shutdown() // close WS connection first
  	resp, err := http.Get(fmt.Sprintf("%s/close/%s", c.apiEndpoint, target.Target.Id))
  	if err != nil {
  		return err
  	}
  	defer resp.Body.Close()
  	_, errRead := ioutil.ReadAll(resp.Body)
  	return errRead
  }
docs: // CloseTab closes the target tab.