040000 tree c178ac196daa225bc374889ba8573a238aecb02f	bbr
040000 tree 700d42ac3f82c5cdedb4f3a1ca5878bed32d46e8	bbsim
040000 tree 929ffdc2aa93e802487fcccff86d0200c68a804b	bbsimctl
040000 tree 69c79de31fdc592818fb228e5092d2a28da8a67d	common