def __init__(self, base_site, auth, listing_type, listing_uuid):
        super(RemoteListingImages, self).__init__(auth)
        self._base_site = base_site
        self._auth = auth
        self._listing_type = listing_type
        self._listing_uuid = listing_uuid
        self._endpoint = base_site + "/api/listings/%s/%s/images/" % (
                listing_type, listing_uuid)