040000 tree ae143231e0a2d20ae46296c580947d55a22e21cc	io
040000 tree c3913b91490dbed1119c9992fa876ae82b7e7b49	logging
040000 tree bf9f95275b70794cf08a4eb360a10da36a590a29	misc
040000 tree b68d21fd582c6a8e5c23d6fef0a882427631906c	quantization
040000 tree 8ce6b037ffc50c88029e6b65040d8c62e097639a	strong_type