9 – How add leaflet provider to geocoders providers list?

In this case, I want configure the geocoder provider Leaflet but but I do not know how.

I have enabled “Geolocation – Leaflet” submodule of “Geolocation” module but I go to path: “/admin/config/system/geocoder/geocoder-provider” and I see this:

Empty list providers

So I go to the link list and there isn’t leaflet anywhere. I would like to know how I can add the leaflet provider.