040000 tree c490ca47eef965a42aa9eb80b477ed59ce6095e0	cpp
040000 tree 2ee973cf84aa3c84dd973d227ac3ce619673a0aa	java
040000 tree a21749aed8790a43cf55c64d77fcb23a59b4ffe9	native
040000 tree ec14a6a7a8a5d631af8baf27962f4e9942d5fc02	protobuf
040000 tree a4e0a4a3c479400dda03784001c944905a8099f7	tools