* of network interceptors; for application interceptors this is always null.
     */
    fun connection(): Connection?

    fun call(): Call

    fun connectTimeoutMillis(): Int

    fun withConnectTimeout(
      timeout: Int,
      unit: TimeUnit,
    ): Chain

    fun readTimeoutMillis(): Int

    fun withReadTimeout(
      timeout: Int,
      unit: TimeUnit,
    ): Chain