No speak any content of element only.

        :param element: The element.
        :type element: hatemile.util.html.htmldomelement.HTMLDOMElement

def _speak_none(self, element):
        """
        No speak any content of element only.

        :param element: The element.
        :type element: hatemile.util.html.htmldomelement.HTMLDOMElement
        """
        # pylint: disable=no-self-use

        element.set_attribute('role', 'presentation')
        element.set_attribute('aria-hidden', 'true')
        element.set_attribute(AccessibleCSSImplementation.DATA_SPEAK, 'none')