code: def exchange_rate(max_target_dim: int = None):
      return make_multivariate_dataset(
          dataset_name="exchange_rate_nips",
          dataset_benchmark_name="exchange_rate_nips",
          num_test_dates=5,
          prediction_length=30,
          max_target_dim=max_target_dim,
      )
  
imports: from collections import OrderedDict
  import numpy
  import os
  import logging
  from typing import NamedTuple
  import pandas
  from pathlib import Path
  import tarfile
  from gluonts.dataset.common import Dataset, load_datasets
  from gluonts.dataset.repository import default_dataset_path
label_desc: Use image node_id 10 for calling a global function with example usage: exchange_rate(max_target_dim) and returns: make_multivariate_dataset