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040000 tree 4b023739403696703e6880616166471244739a82	java
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040000 tree 8242d860605faa90b9bcee54477f72b66cf2dc05	protobuf
040000 tree a478e4231bdbdcbd684285b27e2499cf79e84cd2	res
040000 tree 3fe81ddc0d7db066045be4012083ad78a84cc990	tools