How to use the mechanicalsoup.browser.Browser.add_soup function in MechanicalSoup

"""Reload the current page with the same request as originally done.
        Any change (`select_form`, or any value filled-in in the form) made to
        the current page before refresh is discarded.

        :raise ValueError: Raised if no refreshable page is loaded, e.g., when
            using the shallow ``Browser`` wrapper functions.

        :return: Response of the request."""
        old_request = self.__state.request
        if old_request is None:
            raise ValueError('The current page is not refreshable. Either no '
                             'page is opened or low-level browser methods '
                             'were used to do so')

        resp = self.session.send(old_request)
        Browser.add_soup(resp, self.soup_config)
        self.__state = _BrowserState(page=resp.soup, url=resp.url,
                                     request=resp.request)
        return resp

def get(self, *args, **kwargs):
        """Straightforward wrapper around `requests.Session.get
        `__.

        :return: `requests.Response
            `__
            object with a *soup*-attribute added by :func:`add_soup`.
        """
        response = self.session.get(*args, **kwargs)
        if self.raise_on_404 and response.status_code == 404:
            raise LinkNotFoundError()
        Browser.add_soup(response, self.soup_config)
        return response