040000 tree fc08d3c856671157c79ff66d05e19b48795292ff	bbr
040000 tree 4c5a727de313c89f1b2884312fa0f4bd85e80bdb	bbsim
040000 tree f81a74d8ea514fe611b36c7e6430a279d10bdf5f	bbsimctl
040000 tree 71550c8a51fcabc46a80946f7d0602393974c08a	common