040000 tree 59a750f6ebeaf7fee846fcb4d5f873046427cfa4	cpp
040000 tree a451eb926f318d7d77a8c3ad64db3c576f9979dd	java
040000 tree 2e094d79d756a38ca04c0d9956c36d6d0e98f13a	native
040000 tree f737b3daa189c409548c1e9144309eb085246289	protobuf
040000 tree f4a85a620b54039c627cf2ed6dd24f5f7571d3e5	tools