040000 tree b98be1724a29e3728351f4a8689e2fcd975b5f3c	exceptions
040000 tree a2a8fa30c8bc5fc05959d2857eda11ce6187685f	protocol
040000 tree 064f12ab52016a0b1fbc07e89f4ef0a15cb2bd1c	types
040000 tree 8266e4d0954973d646f402a5d8b0920816911879	util