docs: def _in_list(self, original_list, item):
          """
          Check that an item as contained in a list.
  
          :param original_list: The list.
          :type original_list: list(object)
          :param item: The item.
          :type item: hatemile.util.html.htmldomelement.HTMLDOMElement
          :return: True if the item contained in the list or False if not.
          :rtype: bool
          """
          # pylint: disable=no-self-use
  
          for item_list in original_list:
              if item is item_list:
                  return True
          return False