040000 tree 259db8516b963b8233e49bbaf2b8a9bb9bae5ece	greeter_client
040000 tree 7b712e90f08683acbabe8bebff2a4d1869099292	greeter_server
040000 tree 082dcfeda57b5ce2baca987192208d3830cc4bff	helloworld
040000 tree cbbd2290a59c87912e806b268e329a19d7854f60	mock_helloworld