040000 tree b98be1724a29e3728351f4a8689e2fcd975b5f3c	exceptions
040000 tree 9d31a62b69ad5568452e95e380154cdcc75c77c2	protocol
040000 tree e9cda67a39a9e3a4a080e2880c6c2a0a9e8184d8	types
040000 tree ab0625f1be5e65837a80f625b8848cf6a80f3126	util