code: def test_junk_input(self):
      model = self.model
      with self.assertRaises(TypeError):
          predictions = model.predict("junk value")
      with self.assertRaises(TypeError):
          predictions = model.predict_topk(12)
      with self.assertRaises(TypeError):
          predictions = model.classify("more junk")
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import os
  import sys
  import unittest
  import turicreate
  from turicreate.toolkits._main import ToolkitError
  from turicreate.toolkits._internal_utils import _mac_ver, _raise_error_if_not_sframe, _raise_error_if_not_sarray
  import tempfile
  import shutil
  import pytest
  import coremltools
  import platform
label_desc: Use image node_id 9 for calling the ImageClassifierTest obj's underlying member method code with example usage: obj.test_junk_input() without return types