040000 tree 5a74453f8fbaad8e3957dc64687aa0a11a1895c0	ParDo
040000 tree ab1a83e67b7d28737917c05671afecb54dd8480f	WithTimestamps
100644 blob c6a234c6dce4c618cd09a73035053f18fab2eefe	lesson-info.yaml
100644 blob 752baeff3c3798c758509b1b153af85d1083b100	lesson-remote-info.yaml