handleUpEvent(mapBrowserEvent) {
    if (this.targetPointers.length == 0) {
      const map = mapBrowserEvent.map;
      const view = map.getView();
      const direction = this.lastScaleDelta_ > 1 ? 1 : -1;
      view.endInteraction(this.duration_, direction);
      this.handlingDownUpSequence_ = false;
      this.handlingDoubleDownSequence_ = false;
      return false;
    }
    return true;
  }
Handle pointer up events zooming out.
@param {import("../MapBrowserEvent.js").default} mapBrowserEvent Event.
@return {boolean} If the event was consumed.