* established from a planned [Route]. OkHttp won't retry if it's already attempted all
   * available routes.
   *
   * @param retry true if OkHttp will make another attempt
   */
  open fun retryDecision(
    call: Call,
    exception: IOException,
    retry: Boolean,
  ) {
  }

  /**
   * Invoked when OkHttp decides whether to perform a follow-up request.
   *

        } catch (e: IOException) {
          // An attempt to communicate with a server failed. The request may have been sent.
          val isRecoverable = recover(e, call, request)
          call.eventListener.retryDecision(call, e, isRecoverable)
          if (!isRecoverable) throw e.withSuppressed(recoveredFailures)
          recoveredFailures += e
          newRoutePlanner = false
          continue
        }

 *  Fix: Change the signature of `Dispatcher` to accept a nullable `ExecutorService`. Changing this
    parameter to be non-null was an unintended signature change in OkHttp 4.0.

 *  New: `EventListener.retryDecision()` is called each time a request fails with an `IOException`.
    It notifies your listener if OkHttp will retry.

 *  New: `EventListener.followUpDecision()` is called each time a response is received. It notifies