040000 tree 139f4bea68e47d082a9cfc54318053586e7fc51f	api
040000 tree abb2f991326ba52586bcc611c18db34d171d3b8d	client
040000 tree 199a43f9e62b1bc7fe0bedfd4f1949b78935bd9f	server_v1
040000 tree 37c745e6442ca235ab409839af391511e45ec6e7	server_v2