BaseLayerPicker: how to add "no Baselayer"

Hi there,

I’ve just a question regarding the BaseLayerPicker.
I’ve created a custom one with several ImageryProviders and TerrainProviders and everything is working fine and as intended.

But I would like to have the possibility to select a “bare globe, no baselayer” option. Is something like this possible? I have’nt found any API reference for such a thing inside the BaseLayerPicker.

Maybe someone in the community already has a solution to this?

Best, Lennart