code: def _PrepareTFServingRequestBuilder(self):
      patcher = mock.patch.object(
          request_builder,
          "_TFServingRpcRequestBuilder",
          wraps=request_builder._TFServingRpcRequestBuilder,
      )
      builder_cls = patcher.start()
      self.addCleanup(patcher.stop)
      return builder_cls
  
imports: import os
  from typing import Any, Dict
  from unittest import mock
  import tensorflow
  from tfx.components.infra_validator import request_builder
  from tfx.proto import infra_validator_pb2
  from tfx.types import artifact_utils
  from tfx.types import standard_artifacts
  from tfx.utils import path_utils
  from google.protobuf import json_format
  from tensorflow.core.protobuf import meta_graph_pb2
  from tensorflow.core.protobuf import saved_model_pb2
  from tensorflow_serving.apis import classification_pb2
  from tensorflow_serving.apis import predict_pb2
  from tensorflow_serving.apis import regression_pb2
label_desc: Use image node_id 2 for calling the TestBuildRequests obj's underlying member method code with example usage: obj._PrepareTFServingRequestBuilder() and returns: builder_cls