message: Change ImageSpec to ModelSpec.
diff: "from tflite_model_maker.config import ExportFormat\n",
  "from tflite_model_maker.config import QuantizationConfig\n",
  "from tflite_model_maker.image_classifier import DataLoader\n",
  - "from tflite_model_maker.image_classifier import ImageSpec\n",
  + "from tflite_model_maker.image_classifier import ModelSpec\n",
  "\n",
  "import matplotlib.pyplot as plt"
  ]
  "\n",
  "Moreover, we could also switch to other new models that inputs an image and outputs a feature vector with TensorFlow Hub format.\n",
  "\n",
  - "As [Inception V3](https://tfhub.dev/google/imagenet/inception_v3/feature_vector/1) model as an example, we could define `inception_v3_spec` which is an object of `ImageSpec` and contains the specification of the Inception V3 model.\n",
  + "As [Inception V3](https://tfhub.dev/google/imagenet/inception_v3/feature_vector/1) model as an example, we could define `inception_v3_spec` which is an object of `ModelSpec` and contains the specification of the Inception V3 model.\n",
  "\n",
  "We need to specify the model name `name`, the url of the TensorFlow Hub model `uri`. Meanwhile, the default value of `input_image_shape` is `[224, 224]`. We need to change it to `[299, 299]` for Inception V3 model."
  ]
  },
  "outputs": [],
  "source": [
  - "inception_v3_spec = ImageSpec(\n",
  + "inception_v3_spec = ModelSpec(\n",
  " uri='https://tfhub.dev/google/imagenet/inception_v3/feature_vector/1')\n",
  "inception_v3_spec.input_image_shape = [299, 299]"
  ]
  "source": [
  "If we'd like to use the custom model that's not in TensorFlow Hub, we should create and export [ModelSpec](https://www.tensorflow.org/hub/api_docs/python/hub/ModuleSpec) in TensorFlow Hub.\n",
  "\n",
  - "Then start to define `ImageSpec` object like the process above."
  + "Then start to define `ModelSpec` object like the process above."
  ]
  },
  {
  