'Refresh the current token.
Fetch an updated refresh token from internal metadata service.
:param  token_info: Dictionary containing token information.
(Not used, but here for compatibility)
:type   token_info: ``dict``
:return:  A dictionary containing updated token information.
:rtype:   ``dict``'

def refresh_token(self, token_info):

    return self.get_new_token()
