040000 tree 4c5b234f9fe575254cbbbec2dd227c789fddd1f7	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree e5257056068310278cb03254298e5bb02b3b1f0f	protocol
040000 tree b57a996aa401418045eb68b360900c243397ad2b	types
040000 tree 6f49b38c061518635aabd32969644dfcd5758957	util