docs: def _speak_header_once_inherit(self, element):
          """
          The cells headers will be spoken one time for element and descendants.
  
          :param element: The element.
          :type element: hatemile.util.html.htmldomelement.HTMLDOMElement
          """
  
          header_elements = self.html_parser.find(element).find_descendants(
              '['
              + AccessibleDisplayImplementation.DATA_ATTRIBUTE_HEADERS_OF
              + ']'
          ).list_results()
          for header_element in header_elements:
              header_element.remove_node()