code: def create_dummy_data_dict(self, path_to_dummy_data, data_url):
      dummy_data_dict = {}
      for key, single_urls in data_url.items():
          for download_callback in self.download_callbacks:
              if isinstance(single_urls, list):
                  for single_url in single_urls:
                      download_callback(single_url)
              else:
                  single_url = single_urls
                  download_callback(single_url)
          # we force the name of each key to be the last file / folder name of the url path
          # if the url has arguments, we need to encode them with urllib.parse.quote_plus
          if isinstance(single_urls, list):
              value = [
                  os.path.join(
                      path_to_dummy_data,
                      urllib.parse.quote_plus(Path(x).name),
                  )
                  for x in single_urls
              ]
          else:
              single_url = single_urls
              value = os.path.join(
                  path_to_dummy_data,
                  urllib.parse.quote_plus(Path(single_url).name),
              )
          dummy_data_dict[key] = value
  
      # make sure that values are unique
      if all(
          isinstance(i, str) for i in dummy_data_dict.values()
      ) and len(set(dummy_data_dict.values())) < len(
          dummy_data_dict.values()
      ):
          # append key to value to make its name unique
          dummy_data_dict = {
              key: value + key for key, value in dummy_data_dict.items()
          }
  
      return dummy_data_dict
  
imports: import os
  import re
  import urllib.parse
  from pathlib import Path
  from typing import Callable, List, Optional, Union
  from zipfile import ZipFile
  from ..utils.file_utils import cached_path, hf_github_url
  from ..utils.logging import get_logger
  from ..utils.version import Version
label_desc: Use image node_id 14 for calling the MockDownloadManager obj's underlying member method code with example usage: obj.create_dummy_data_dict(path_to_dummy_data, data_url) and returns: dummy_data_dict