updateCaptionsFunction(text);
      };

      // immediately invoke the callback function to add subtitles to the PiP window
      callback([1], null);

      this.captionsObserver = new MutationObserver(callback);

      this.captionsObserver.observe(container, {
        attributes: false,
        childList: true,
        subtree: true,
      });
    }
  }
  removeCaptionContainerObserver() {
    this.captionsObserver?.disconnect();
  }
}

this.PictureInPictureVideoWrapper = PictureInPictureVideoWrapper;
PK