In VFP8, what is the 'best practice' for passing a cursor as an object to a black box function?

Basically, I have a function called 'GetHistory'. I'd like to set it up to retrieve history for one account, or a dozen accounts, or hundreds of accounts. I'd like to pass it a cursor object containing a list of accounts...and then have it return a cursor object containing the results.

I've been looking at the new XMLAdapter and how I might be able to use it...but was curious if others had tried this, and what the recommended approach would be.

Thanks,
Kevin