code: def after(self, *nodes: Union[AbstractNode, str]) -> None:
          
          if self.parentNode:
              node = _to_node_list(nodes)
              _next_node = self.nextSibling
              if _next_node is None:
                  self.parentNode.appendChild(node)
              else:
                  self.parentNode.insertBefore(node, _next_node)
docs: Append nodes after this node.
  
          If nodes contains ``str``, it will be converted to Text node.