040000 tree d545a08b9e41f88e2729228e0ca43b825aa86071	internal
040000 tree 6987ecf6f444d6022fcd9f59a09d1c28f5c4ef9b	patch
040000 tree 16b4e485c5d667734f610f4ca316e85d5c346b53	rangedifferencer