# File lib/fog/dns/openstack/v2/requests/list_recordsets.rb, line 35
          def list_recordsets(zone_id = nil, options = {})
            if zone_id.kind_of?(Hash)
              options = zone_id
              zone_id = nil
            end
            zone_id = options.delete(:zone_id) if zone_id.nil?

            response = Excon::Response.new
            response.status = 200
            data[:recordsets]["recordsets"].each do |rs|
              rs["zone_id"] = zone_id unless zone_id.nil?
            end
            response.body = data[:recordsets]
            response
          end