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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_response_for_url(self, url):
 """ Accepts a fully-qualified url. Returns an HttpResponse, passing through all headers and the status code. """


        if not url or "//" not in url:
            raise ValueError("Missing or invalid url: %s" % url)

        render_url = self.BASE_URL + url
        headers = {
            'X-Prerender-Token': self.token,
        }
        r = self.session.get(render_url, headers=headers, allow_redirects=False)
        assert r.status_code < 500

        return self.build_django_response_from_requests_response(r)