040000 tree 4c5b234f9fe575254cbbbec2dd227c789fddd1f7	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree 94c9fbd05725b34bc239d3795d2c4763da4cc966	protocol
040000 tree 76be4be921e6bf691c41dbc68bab0eea3d0b9922	types
040000 tree ccef954be2b47d42f6cdbea57b7f7bc54ff64a9b	util