* Content-Length: 3
       *
       * Hi?
       * --> END POST
       *
       * <-- 200 OK (22ms)
       * Content-Type: plain/text
       * Content-Length: 6
       *
       * Hello!
       * <-- END HTTP
       * ```
       */
      BODY,
    }

    fun interface Logger {
      fun log(message: String)

      companion object {