def spawn(name)
      if all_services.include?(name)
        name = name.to_s
        require "geocoder/lookups/#{name}"
        Geocoder::Lookup.const_get(classify_name(name)).new
      else
        valids = all_services.map(&:inspect).join(", ")
        raise ConfigurationError, "Please specify a valid lookup for Geocoder " +
          "(#{name.inspect} is not one of: #{valids})."
      end
    end
def spawn(name)
      if all_services.include?(name)
        name = name.to_s
        require "geocoder/lookups/#{name}"
        Geocoder::Lookup.const_get(classify_name(name)).new
      else
        valids = all_services.map(&:inspect).join(", ")
        raise ConfigurationError, "Please specify a valid lookup for Geocoder " +
          "(#{name.inspect} is not one of: #{valids})."
      end
    end
-----------------------------------------------------------------

 Spawn a Lookup of the given name.