code: def get_dataset(base_dir=None):
      return ChicagoTaxiDataset(base_dir)
  
imports: import itertools
  import math
  import os
  import shutil
  import tempfile
  from typing import Optional
  from absl import logging
  import apache_beam
  import tensorflow_transform
  from tfx import components
  from tfx.benchmarks import benchmark_dataset
  from tfx.components.example_gen.csv_example_gen import executor
  from tfx.examples.chicago_taxi_pipeline import taxi_utils
  from tfx.orchestration import metadata
  from tfx.orchestration import pipeline
  from tfx.orchestration.beam.beam_dag_runner import BeamDagRunner
  from tfx.proto import trainer_pb2
  from tfx_bsl.coders import csv_decoder
label_desc: Use image node_id 1 for calling a global function with example usage: get_dataset(base_dir) and returns: ChicagoTaxiDataset