code: def test_infer(self, mock_call_servo):
      self.plugin.examples = [
          self.get_fake_example(0),
          self.get_fake_example(1),
          self.get_fake_example(2),
      ]
      self.plugin.updated_example_indices = set([0, 2])
  
      inference_result_proto = regression_pb2.RegressionResponse()
      regression = inference_result_proto.result.regressions.add()
      regression.value = 0.45
      regression = inference_result_proto.result.regressions.add()
      regression.value = 0.55
      mock_call_servo.return_value = inference_result_proto
  
      response = self.server.get(
          "/data/plugin/whatif/infer?"
          + urllib_parse.urlencode(
              {
                  "inference_address": "addr",
                  "model_name": "name",
                  "model_type": "regression",
                  "model_version": ",",
                  "model_signature": ",",
              }
          )
      )
  
      self.assertEqual(200, response.status_code)
      self.assertEqual(0, len(self.plugin.updated_example_indices))
      inferences = json.loads(
          json.loads(response.get_data().decode("utf-8"))["inferences"]
      )
      self.assertTrue(0 in inferences["indices"])
      self.assertFalse(1 in inferences["indices"])
      self.assertTrue(2 in inferences["indices"])
  
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 7 for calling the InferencePluginTest obj's underlying member method code with example usage: obj.test_infer(mock_call_servo) without return types