geolocation-8.x-3.x-dev/modules/geolocation_geofield/config/schema/geolocation_geofield.field.schema.yml

field.formatter.settings.geolocation_geofield:
  type: geolocation.field.formatter.map.base
  label: 'Geolocation Geofield Map Formatter'
  mapping:
    data_provider_settings:
      label: 'Data provider settings'
      type: geolocation.data_provider.geofield