def get_manifest_and_response(self, alias):
r = self._request('<STR_LIT>',<EOL>'<STR_LIT>' + alias,<EOL>headers={'<STR_LIT>': _schema2_mimetype + '<STR_LIT:U+002CU+0020>' +<EOL>_schema1_mimetype})<EOL>return r.content.decode('<STR_LIT:utf-8>'), r<EOL>
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>`_