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040000 tree a1fbfb591bf5ce88e90bc60c9cf6e77d8ef988be	java
040000 tree 5aaa1e5f1cdfb81cbcbc14b337b514dd651ac3ce	native
040000 tree a13ee2de37533bbd4948af08d68f969d516b2a18	protobuf
040000 tree 86d5de77a4e7518f7bd815d6dd85e20ebdf0ed45	tools