    # File lib/action_controller/integration.rb, line 206
          def xml_http_request(request_method, path, parameters = nil, headers = nil)
            headers ||= {}
            headers['X-Requested-With'] = 'XMLHttpRequest'
            headers['Accept'] ||= 'text/javascript, text/html, application/xml, text/xml, */*'

            process(request_method, path, parameters, headers)
          end