code: def test_examples_from_path_if_path_does_not_exist(self):
      response = self.server.get(
          "/data/plugin/whatif/examples_from_path?"
          + urllib_parse.urlencode(
              {
                  "examples_path": "does_not_exist",
                  "max_examples": 2,
                  "sampling_odds": 1,
              }
          )
      )
      error = json.loads(response.get_data().decode("utf-8"))["error"]
      self.assertTrue(error)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import json
  import os
  import sys
  import numpy
  import tensorflow
  from six.moves import urllib_parse
  from google.protobuf import json_format
  from tensorflow_serving.apis import regression_pb2
  from werkzeug import test
  from werkzeug import wrappers
  from tensorboard.backend import application
  from tensorboard.backend.event_processing import plugin_event_multiplexer
  from tensorboard.plugins import base_plugin
  from utils import inference_utils
  from utils import platform_utils
  from utils import test_utils
  import wit_plugin
label_desc: Use image node_id 4 for calling the InferencePluginTest obj's underlying member method code with example usage: obj.test_examples_from_path_if_path_does_not_exist() without return types