040000 tree 81a4cf2fa393a714aa19d496be784e720547b084	common
040000 tree 052b4b1f2eaecf795358cf796042c7aa7f03ac80	import
040000 tree 0c3de25d7df8a9a370b9a15e3516229029637cbd	proto
040000 tree 6a0bd1ffb127c1278d9aebf9885c3eec6cb1568a	types