} else if (logger.isDebugEnabled()) {
                logger.debug("[{}] Failed to access to Fesen ({})", i, SystemUtil.getSearchEngineHttpAddress(), cause);
            }
            ThreadUtil.sleep(1000L);
        }
        final String message =
                "Fesen (" + SystemUtil.getSearchEngineHttpAddress() + ") is not available. Check the state of your Fesen cluster ("

    // This response takes at least a full second to serve: 10,000 bytes served 100 bytes at a time.
    server.enqueue(
      MockResponse
        .Builder()
        .body(Buffer().write(ByteArray(10000)))
        .throttleBody(100, 10, TimeUnit.MILLISECONDS)
        .build(),
    )
    server.enqueue(
      MockResponse(body = "A"),
    )
    val startNanos = System.nanoTime()