*/
    fun maxAge(
      maxAge: Int,
      timeUnit: TimeUnit,
    ) = apply {
      require(maxAge >= 0) { "maxAge < 0: $maxAge" }
      val maxAgeSecondsLong = timeUnit.toSeconds(maxAge.toLong())
      this.maxAgeSeconds = maxAgeSecondsLong.commonClampToInt()
    }

    /**
     * Accept cached responses that have exceeded their freshness lifetime by up to `maxStale`. If

        if ((duration.getSeconds() | duration.getNano()) > 0) { // duration.isPositive()
            long bytesPerSecond = Math.round(contentLength / (double) duration.toSeconds());
            message.append(" at ");
            format.format(message, bytesPerSecond);
            message.append("/s");
        }

        message.append(')');
        out.info(message.toString());
    }

    // waited and assert based on that time. Empirically, the race where the thread ends up waiting
    // for 5.5 seconds happens about 2% of the time.
    boolean longWait = NANOSECONDS.toSeconds(thread.timeSpentBlocked) >= 5;
    // Count how long it actually took to return; we'll accept any number between the expected delay
    // and the approximate actual delay, to be robust to variance in thread scheduling.

    // waited and assert based on that time. Empirically, the race where the thread ends up waiting
    // for 5.5 seconds happens about 2% of the time.
    boolean longWait = NANOSECONDS.toSeconds(thread.timeSpentBlocked) >= 5;
    // Count how long it actually took to return; we'll accept any number between the expected delay
    // and the approximate actual delay, to be robust to variance in thread scheduling.