def __repr__(self):
        return "<Requirements({})>".format(self.filename.name or "")
def __init__(self, auth_provider):
        super(SnapshotsClientJSON, self).__init__(auth_provider)

        self.service = CONF.volume.catalog_type
        self.build_interval = CONF.volume.build_interval
        self.build_timeout = CONF.volume.build_timeout