040000 tree 4c5b234f9fe575254cbbbec2dd227c789fddd1f7	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree f3dc47f61112161b729790dd08e5c9daeb64fa26	protocol
040000 tree 253f83fe2e3435f1ffc0a5eb7fa356cf22d50a92	types
040000 tree 49180364abc32c54a752659fa6fbd2fceef75973	util