code: def _default_node_visitor(self, node):
          
          return {
              "depth": getattr(node, node._cte_node_depth),
              "path": [str(c) for c in getattr(node, node._cte_node_path)],
              "ordering": getattr(node, node._cte_node_ordering),
              "leaf": node.is_leaf(),
              "branch": node.is_branch(),
              "node": node,
          }
docs: Generates a dictionary representation of the given :class:`CTENode`
          `node`, which consists of the node itself under the key ``node``, as
          well as structural information under the keys ``depth``, ``path``,
          ``ordering``, ``leaf``, and ``branch``.
  
          :param node: the :class:`CTENode` for which to generate the
              representation.
  
          :return: a dictionary representation of the structure of the node.