How to use the rx-queue.DelayQueueExector function in rx-queue

public options: ManagerOptions,
  ) {
    super(options.endpoint, options.token)
    log.verbose('PuppetPadchatManager', 'constructor()')

    this.memorySlot = {
      device: {},
    }

    this.state = new StateSwitch('PuppetPadchatManager')

    /**
     * Executer Queue: execute one task at a time,
     *  delay between them for 15 second
     */
    this.delayQueueExecutor = new DelayQueueExector(1000 * 15)

  }