040000 tree 52f3b9c9c086723ad939565269af1128fef142bf	common
040000 tree b3587ef6a740085fd9d1aca39fcd3deccafecbf5	import
040000 tree 2f418ff107c88bd6ea9f8e6c051ea754b52daee4	proto
040000 tree f9113c6b1d27d4c1950c9549e79524220ec875ea	types