040000 tree 4c5b234f9fe575254cbbbec2dd227c789fddd1f7	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree f1109a6d6f9ef3dca7ed16f780bf6255cd0a4833	protocol
040000 tree 1a45e7f421bdefa52ac51f40b9fbf4b328e9bf12	types
040000 tree 29642ded176165194ab08618261d596c1800439a	util