040000 tree 8e8fcfd002ee137d872c2db751c5d5b8a9ade78e	ietfyang
040000 tree 2dafdcd10f3b76aa7fd6fe05876b203e1b84d604	parser
040000 tree 344350c61b6e02ad24bba70227fb98712f8f6a73	plugin
040000 tree 6181f11f06b6e739bcc5450c48fc8857dbfcf4fd	translator
040000 tree 0621dc081672829057895dd069544cdc71700538	utils