040000 tree 4c5b234f9fe575254cbbbec2dd227c789fddd1f7	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree eafba426cc634d00972291191d2d4261f98cd39c	protocol
040000 tree e1abfd595f32fa54f23c22c4d4baceba18afd543	types
040000 tree 49180364abc32c54a752659fa6fbd2fceef75973	util