code: def element(self, *args, **kwargs):
          
          child_element = self._element.add_element(*args, **kwargs)
          return Builder(child_element)
docs: Add a child element to the :class:`xml4h.nodes.Element` node
          represented by this Builder.
  
          :return: a new Builder that represents the child element.
  
          Delegates to :meth:`xml4h.nodes.Element.add_element`.