def get_user_roles(self, user):
        """Get roles associated with the given user.

        Args:
            user (string): User name.

        Returns:
            (list): List of roles that user has.

        Raises:
            requests.HTTPError on failure.
        """
        return self.service.get_user_roles(
            user, self.url_prefix, self.auth, self.session, self.session_send_opts)