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040000 tree 2b53add4f9edeba0aaec30f38a4316a9155e65e4	java
040000 tree a3758cbd367f99c4e0bcccfb0b1131df9362a13c	native
040000 tree 2d3644b8a873d1bdfb2d031f2604df7bc0236d50	protobuf
040000 tree 45aeb1cee939ce2e582f72d9d06657a58416b1fc	tools