def html_visit(self, node):
    """
    Visitor method for Need-node of builder 'html'.
    Does only wrap the Need-content into an extra <div> with class=need
    """
    self.body.append(self.starttag(node, 'div', '', CLASS='need'))
Visitor method for Need-node of builder 'html'.
    Does only wrap the Need-content into an extra <div> with class=need