docs: def _utf8_list_to_ascii_tuple(utf8_list):
      """
      Convert unicode strings in a list of lists to ascii in a list of tuples.
  
      :param utf8_list: A nested list of unicode strings.
      :type utf8_list: list
      """
      for n, utf8 in enumerate(utf8_list):
          utf8_list[n][0] = str(utf8[0])
          utf8_list[n][1] = str(utf8[1])
          utf8_list[n] = tuple(utf8)