# File lib/aws/core/query_request_builder.rb, line 26
      def populate_request request, options

          now = Time.now.utc.strftime('%Y-%m-%dT%H:%M:%SZ')

          request.headers['Content-Type'] =
            "application/x-www-form-urlencoded; charset=utf-8"

          request.add_param 'Timestamp', now
          request.add_param 'Version', @api_version
          request.add_param 'Action', @operation_name

          @grammar.request_params(options).each do |param|
            request.add_param(param)
          end
          request.body = request.url_encoded_params

      end