def _get(self, url, **kw):
        '''
        Makes a GET request, setting Authorization
        header by default
        '''
        headers = kw.pop('headers', {})
        headers.setdefault('Content-Type', 'application/json')
        headers.setdefault('Accept', 'application/json')
        headers.setdefault('Authorization', self.AUTHORIZATION_HEADER)
        kw['headers'] = headers
        resp = self.session.get(url, **kw)
        self._raise_for_status(resp)
        return resp
Makes a GET request, setting Authorization
        header by default