040000 tree 4c5b234f9fe575254cbbbec2dd227c789fddd1f7	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree fd6fb227683a605b6019d99a71d1b944d10da0f3	protocol
040000 tree 7245504364a9070db8d78a3de19affb24acb9d49	types
040000 tree 1e99b96fcbcdc679ea64ef107116d3f905eec514	util