def METHOD_NAME(self):
    dest_path = self._model_path(self.model_id)
    metadata_json = os.path.join(dest_path, METADATA_JSON_FILE)
    if not os.path.exists(metadata_json):
        return None
    with open(metadata_json, "r") as f:
        data = json.load(f)
    input_type = data[_AIRTABLE_INPUT_TYPE_FIELD]
    input_shape = data[_AIRTABLE_INPUT_SHAPE_FIELD]
    return input_type, input_shape