040000 tree 7cc1ecce4429059096e0df00c59b8188b9685463	docgen
040000 tree ee4ab07f95c85753cc25856cc66894613e23e07f	lib
040000 tree 98f402f0defa9970d5dcddde420ee031ec398b5f	skydoc
040000 tree 550ea02930503c4f11cf4d9ce3d19f579fcb5572	skyframe