040000 tree 54749c3602f4ef668f98f2844d28234d4e52cb86	go-client
040000 tree b6f458dd0b21859560231e9bd55ebee8953bfe58	go-server
040000 tree e1a10287f2d7e0b645277d167136243502bb7f79	java-client
040000 tree 189d88d8becf009953e5bf2ea797100a4b36899f	java-server