echo
----
{
  b := &kv.Batch{}
  b.DelRangeUsingTombstone(ctx, tk(1), tk(3) /* @s1 */) // <nil>
  b.DelRangeUsingTombstone(ctx, tk(2), tk(4) /* @s2 */) // <nil>
  db0.Run(ctx, b) // @0.000000001,0 <nil>
}
/Table/100/"000000000000000{1"-2"}/0.000000001,0 @ s1 <nil>
/Table/100/"000000000000000{2"-4"}/0.000000001,0 @ s2 <nil>
