}
    }
    return call.messageDone(
      exchange = this,
      requestDone = requestDone,
      responseDone = responseDone,
      e = e,
    )
  }

  fun noRequestBody() {
    call.messageDone(
      exchange = this,
      requestDone = true,
      e = null,
    )
  }

  /** A request body that fires events when it completes. */