Any way to get trailing commas from Sumneko's new formatter?

One of the things I really enjoyed about using stylua for formatting was the trailing commas it would automatically insert at the end of lists/tables etc. I recently switched from using stylua, though, to sumneko’s new built in formatter. It seems like he default behavior for this formatter was to insert trailing commas in the same way, but it does not.

I’m trying to figure out if there’s a configuration setting I’m missing here, or if I should just switch back to stylua.

Does anyone else have any experience around this?