040000 tree cf12fa3354a0f5e1c85646c0435f475ee3887974	annotations
040000 tree fc2061d7eba98c4e0a4224356f71642a071bb115	exceptions
040000 tree 938d894e92eca84cda7f0841df1626e697609f6b	protocol
040000 tree bdcc411459225aa05da6b509762e8ea0fd1de2bb	types
040000 tree df2108c50df207967876e002fc9224d03a22d5ac	util