constructor(wsInstance) {
    /**
     * @type {WebSlides}
     * @private
     */
    this.ws_ = wsInstance;

    const videos = DOM.toArray(this.ws_.el.querySelectorAll('video'));

    if (videos.length) {
      videos.forEach(video => {
        if (!video.hasAttribute('autoplay')) {
          return;
        }

        video.removeAttribute('autoplay');
        video.pause();
        video.currentTime = 0;
        const {i} = Slide.getSectionFromEl(video);
        const slide = wsInstance.slides[i - 1];

        slide.video = video;

        slide.el.addEventListener(SlideEvents.ENABLE, Video.onSectionEnabled);
        slide.el.addEventListener(SlideEvents.DISABLE, Video.onSectionDisabled);
      });
    }
  }
@param {WebSlides} wsInstance The WebSlides instance.
@constructor