code: def testBucketizeCompositeInput(
      self, input_data, input_metadata, expected_data
  ):
      def preprocessing_fn(inputs):
          return {
              "x_bucketized": tft.bucketize(
                  inputs["x"], num_buckets=3, epsilon=0.00001
              )
          }
  
      self.assertAnalyzeAndTransformResults(
          input_data, input_metadata, preprocessing_fn, expected_data
      )
  
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 5 for calling the BucketizeIntegrationTest obj's underlying member method code with example usage: obj.testBucketizeCompositeInput(input_data, input_metadata, expected_data) and returns: dict