stop() {
    for (const listener of this.adListeners_) {
      this.eventManager_.unlisten(
          listener.target, listener.type, listener.listener);
    }
    this.onEnded_();
    this.adListeners_ = [];
    this.eventsSent = [];
    this.trackingUrl_ = '';
    this.firstTrackingRequest_ = true;
    this.backupUrl_ = '';
    this.snapForwardTime_ = null;
    this.adBreaks_ = [];
    this.playedAds_ = [];
    this.staticResources_.clear();
  }
Resets the MediaTailor manager and removes any continuous polling.