040000 tree 2ff6c141f4a78d08c7a9e87adeab9a844b741e9f	bbr
040000 tree 947f035832863d3531cffc3863a504db121e443a	bbsim
040000 tree dae819eaed5d941a44b0c16783a0c79cfe8bdfd9	bbsimctl
040000 tree 9ba36136c8ceaa45356de79e8af2bc180d65dd62	common