def __init__(self, parent: str, content_filename: str | None=None):
    """Create the footer node.

    :param parent: (str) The parent node identifier
    :param content_filename: (str) The HTML content filename

    """
    super(WhakerKitFooterNode, self).__init__(parent)
    self.reset(content_filename)
    self.set_attribute('id', 'footer-content')

def reset(self, filename: str | None=None):
    """Reset the footer to its default values.

        :param filename: (str | None) The filename to use for the footer content

        """
    self._children = list()
    if filename is not None and os.path.exists(filename) is True:
        with open(filename, encoding='utf-8') as html_file:
            content = html_file.read()
            if len(content.strip()) > 0:
                self.set_value(content.strip())
        self.append_child(HTMLNode(self.identifier, None, 'hr'))
    content = f'<a href="https://whakerkit.sourceforge.io">   <img style="width: 1rem;" src="{whakerkit.sg.path}/statics/icons/favicon.ico" alt="(W) "></a> <p><small>{get_msg(MSG_POWERED_BY)}<small></p>'
    power = HTMLNode(self.identifier, None, 'section', value=content, attributes={'class': 'center'})
    self.append_child(power)