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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 _request_raw_content(self, url, timeout):
 """ Send the request to get raw content. """


        request = Request(url)

        if self.referer is not None:
            request.add_header('Referer', self.referer)

        raw_xml = self._call_geocoder(
            request,
            timeout=timeout,
            deserializer=None
        )

        return raw_xml