code: def clear_data_home(data_home=None):
      """Delete all the content of the data home cache.
  
      Parameters
      ----------
      data_home : str | None
          The path to arviz data dir.
      """
      data_home = get_data_home(data_home)
      shutil.rmtree(data_home)
  
file_path: arviz/arviz/data/datasets.py
imports: import hashlib
  import itertools
  import json
  import os
  import shutil
  from collections import namedtuple
  from urllib.request import urlretrieve
  from ..rcparams import rcParams
  from .io_netcdf import from_netcdf
label_desc: Use image node_id 2 for calling a global function with example usage: clear_data_home(data_home) without return types