040000 tree 54abf26a6f4cd1cdf9fc14af09e671174d0ab1f4	exceptions
040000 tree 340fe86d7f9aebdf0675a33da954f4acb644905b	protocol
040000 tree 577e96abdf646c272a5f80fb39670634a8620756	types
040000 tree aa0acee9ad7184991425ecabc66f4e06fcb5c3a6	util