With function TTMSFNCCustomGeocoding.InternalGetReverseGeocoding it's easy to get Postal code, country, address, city using the TTMSFNCGeocodingRequest argument.
But how to get it with function TTMSFNCCustomGeocoding.InternalGetReverseGeocodingSync ?
The GetReverseGeocodingSync only returns the full address as a string.
If you need the separate address parts like country and city, you'll need to use the async GetReverseGeocoding request.
However this is a good suggestion and we'll investigate if this functionality can be added in a future version.