code: def setUp(self):
      self._context = beam_impl.Context(use_deep_copy_optimization=True)
      self._context.__enter__()
      super().setUp()
  
imports: import contextlib
  import random
  import numpy
  import tensorflow
  import tensorflow_transform
  from tensorflow_transform import analyzers
  from tensorflow_transform.beam import impl
  from tensorflow_transform.beam import tft_unit
  from tensorflow_metadata.proto.v0 import schema_pb2
label_desc: Use image node_id 1 for calling the BucketizeIntegrationTest obj's underlying member method code with example usage: obj.setUp() without return types