040000 tree 8e8fcfd002ee137d872c2db751c5d5b8a9ade78e	ietfyang
040000 tree a7012221ffbff0ad0a10cae2b319cea3aca3977d	parser
040000 tree 523e1e06302a3aa969670c3bca219998891df5a4	plugin
040000 tree 152df5d8983cbd69eb7b177332ca2c627bb8df7b	translator
040000 tree 0621dc081672829057895dd069544cdc71700538	utils