040000 tree b98be1724a29e3728351f4a8689e2fcd975b5f3c	exceptions
040000 tree 7b3832517d0292b508a9ef9a7f725ae247149e8e	protocol
040000 tree c1aeff6ed7a5cbed5e2e9483eee9c130293f8874	types
040000 tree 8266e4d0954973d646f402a5d8b0920816911879	util