100644 blob 945a50867771665fa269c6ba4f9c992832c5cdaf	BUILD
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040000 tree eeb79005008c819d71b65b3bf7e40cb078d940de	helloworld
040000 tree 90d7cb7c7d082b287c89b7106667da23e506c927	helloworld_macos
040000 tree d4f9b0b41d0a312ecbf1219b5d3adbe36e84669b	route_guide