code: func (c *CookieOverseer) Get(w http.ResponseWriter, r *http.Request) (string, error) {
  	val, err := c.options.getCookieValue(w, r)
  	if err != nil {
  		return "", errors.Wrap(err, "unable to get session value from cookie")
  	}
  
  	return c.decode(val)
  }
docs: // Get a value from the cookie overseer