code: def get_dataset_root():
      """Gets the path to the root directory to download and cache datasets.
  
      Returns:
          str: The path to the dataset root directory.
  
      """
      return _dataset_root
  
file_path: chainer/chainer/dataset/download.py
imports: import hashlib
  import os
  import shutil
  import sys
  import filelock
  from six.moves.urllib import request
  from chainer import utils
label_desc: Use image node_id 1 for calling a global function with example usage: get_dataset_root() and returns: _dataset_root