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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_heading_level(self, element):
 """ Returns the level of heading. :param element: The heading. :type element: hatemile.util.html.htmldomelement.HTMLDOMElement :return: The level of heading. :rtype: int """

        # pylint: disable=no-self-use

        tag = element.get_tag_name()
        if tag == 'H1':
            return 1
        elif tag == 'H2':
            return 2
        elif tag == 'H3':
            return 3
        elif tag == 'H4':
            return 4
        elif tag == 'H5':
            return 5
        elif tag == 'H6':
            return 6
        return -1