Lightmap settings is a method that allows the configuration of lighting probes via

LightmapSettings.lightProbes.bakedProbes

This allows the lighting conditions to be swapped for movable objects without the use of dynamic lighting. EG Daytime, nighttime toggle. Offering a preferable performance result compared to realtime lights, with no extremely noticeable difference visually.

It also includes some other lightmap related features that may be useful for creating optimised worlds, I have not personally checked into anything except the probes. It may feature some way to adjust the lightmaps themselves, but I have only explored achieving that through editing the renderers, which works quite well already.

I've attached an image of my discovery that it isn't exposed, just to be clear which function it is that I think would be useful.