040000 tree fb7fea9bff45c22798fec9baa810ef30d5f9ca17	CoGroupByKey
100644 blob 273c0771cccfb055f3444baaef5bd009be8964d5	lesson-info.yaml
100644 blob 29dd24d6c1667b2a3f06e6efa9de635c3fb14c5e	lesson-remote-info.yaml