How to use the @deckdeckgo/utils.lazyLoadSelectedImages function in @deckdeckgo/utils

return new Promise(async (resolve) => {
        const images: HTMLElement[] = getAllImages(el, 'img');

        await lazyLoadSelectedImages(images);

        resolve();
    });
}

return new Promise(async (resolve) => {
      const allSlottedImages: NodeListOf = el.querySelectorAll('img[slot=\'background\']');
      const allShadowImages: NodeListOf = el.querySelectorAll('[slot=\'background\'] img');

      const images: HTMLElement[] = Array.from(allSlottedImages).concat(Array.from(allShadowImages));

      await lazyLoadSelectedImages(images);

      resolve();
    });
  }