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040000 tree 7b5166aca9e1734f588c0a6c9a6c354f71a0fe60	java
040000 tree 96775161b5b5c7b7ec9c128be863034d5b3e30f9	native
040000 tree 37859298f60c3159191d09482bbe221b526ab515	protobuf
040000 tree 82f2f6083acccb3475a7d7b56f12e58cb5bdb74d	tools