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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_manifest_and_response(self, alias):
 """ Request the manifest for an alias and return the manifest and the response. :param alias: Alias name. :type alias: str :rtype: tuple :returns: Tuple containing the manifest as a string (JSON) and the `requests.Response <http://docs.python-requests.org/en/master/api/#requests.Response>`_ """

        r = self._request('get',
                          'manifests/' + alias,
                          headers={'Accept': _schema2_mimetype + ', ' +
                                             _schema1_mimetype})
        return r.content.decode('utf-8'), r