Subclass of TableMap which accepts a date range to be applied to timestamps

There would exist a TableMap subclass which load only those records whose timestamp is within the specified range.

The date range could be accessible via the initJob method, which would accept start date and end date as parameters.
If either parameter is null, the range could be considered unbounded in that direction.

Such a class could either receive each "version" as a different input, or it could receive arrays of those "versions" as input -
perhaps two classes would exist, covering both approaches.

Keeping versions together could be helpful in saving the designer from having to reconstitute this structure (to answer questions
such as "how many versions does the average record have?")