040000 tree 64a493ef910b0fe719a9830876a5e0d0059ab641	data
040000 tree b9d4bbf1e76a027f098575f7ae8c26bf734a181c	demo
040000 tree a38965136ede604ea16bdd8dc9e7f8fd6c711eae	test
040000 tree 0ec7ea9fa4b1459b892238a8657ce61f8e8a6cfe	tool