040000 tree 9b6a2d384985fbf13c1f3fa3cf1b981bef80ca3f	ietfyang
040000 tree 6694d4697ff421a9483f8e91b0822df3562d7121	parser
040000 tree a3b0113d1f054d4a6b55844998d7c8b53128dc06	plugin
040000 tree 152df5d8983cbd69eb7b177332ca2c627bb8df7b	translator
040000 tree 0621dc081672829057895dd069544cdc71700538	utils