# File lib/rack/directory.rb, line 126
    def entity_not_found
      body = "Entity not found: #{@path_info}\n"
      size = Rack::Utils.bytesize(body)
      return [404, {"Content-Type" => "text/plain",
        "Content-Length" => size.to_s,
        "X-Cascade" => "pass"}, [body]]
    end