message: use test_util.get_cache and change `unzip` to `extract` when downloading flowers dataset.
diff: ],
  "source": [
  "image_path = tf.keras.utils.get_file(\n",
  - " 'flower_photos',\n",
  + " 'flower_photos.tgz',\n",
  " 'https://storage.googleapis.com/download.tensorflow.org/example_images/flower_photos.tgz',\n",
  - " untar=True)"
  + " extract=True)\n",
  + "image_path = os.path.join(os.path.dirname(image_path), 'flower_photos')"
  ]
  },
  {
  "outputs": [],
  "source": [
  "image_path = tf.keras.utils.get_file(\n",
  - " 'flower_photos',\n",
  + " 'flower_photos.tgz',\n",
  " 'https://storage.googleapis.com/download.tensorflow.org/example_images/flower_photos.tgz',\n",
  - " untar=True)"
  + " extract=True)\n",
  + "image_path = os.path.join(os.path.dirname(image_path), 'flower_photos')"
  ]
  },
  {
  