040000 tree 4c5b234f9fe575254cbbbec2dd227c789fddd1f7	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree 57c635959c65e63b777cd81632eff25e83f727f5	protocol
040000 tree 894aba7d200b9af3944927e93a7ecfa3ca2da661	types
040000 tree 1e99b96fcbcdc679ea64ef107116d3f905eec514	util