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040000 tree a567a0b4828700b73c12bfd31e969afac3813cdf	java
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040000 tree 154511163eefb1c5e9481d81a5870473dfba0874	protobuf
040000 tree a478e4231bdbdcbd684285b27e2499cf79e84cd2	res
040000 tree c1713b3657800835b3710dcc83eb349001322bbc	tools