code: def tqdm(self):
      
      async_tqdm = utils.async_tqdm
      with async_tqdm(total=0, desc='Dl Completed...', unit=' url') as pbar_url:
        with async_tqdm(total=0, desc='Dl Size...', unit=' MiB') as pbar_dl_size:
          self._pbar_url = pbar_url
          self._pbar_dl_size = pbar_dl_size
          yield
docs: Add a progression bar for the current download.