040000 tree 0f53f04fb2afbbbafeeac1ba969d92caf9203d54	greeter_client
040000 tree 86fd8ec9ca863883baf3ebc17f9458dbce1406d3	greeter_server
040000 tree f0b8bbba0eb1ae1c039416e6ae182825486436c3	helloworld
040000 tree f3d399871b773164fdca94614206ca24762fc206	mock_helloworld