040000 tree f733993425b6ceceed0c2e18f2c210f6e89dfdf9	concepts.callable
040000 tree 1d6dc0cd23cd617d163e8b62577d44c8f4c14059	concepts.compare
040000 tree 5d74c8a77bb8c4ca298a29cea0433535761253d9	concepts.lang
040000 tree ac724d10c16bcf6c482ed6dabb09865e31e48ee9	concepts.object