code: def get_data(
      data_home, url, dest_subdir, dest_filename, download_if_missing
  ):
      if data_home is None:
          data_dir = os.path.join(get_data_dir(), dest_subdir)
      else:
          data_dir = os.path.join(
              os.path.abspath(data_home), dest_subdir
          )
  
      create_data_dir(data_dir)
  
      dest_path = os.path.join(data_dir, dest_filename)
  
      if not os.path.isfile(dest_path):
          if download_if_missing:
              download(url, dest_path)
          else:
              raise IOError("Dataset missing.")
  
      return dest_path
  
imports: import os
  import requests
label_desc: Use image node_id 4 for calling a global function with example usage: get_data(data_home, url, dest_subdir, dest_filename, download_if_missing) and returns: dest_path