(self, node: NodeType)
return node
Override this method if hash(node) is slow for the type of node that are in use.
Override this method if hash(node) is slow for the type of node that are in use.
Override this method if hash ( node ) is slow for the type of node that are in use .
def _node_key(self, node: NodeType) -> NodeKey:  # pylint:disable=no-self-use
        """
        Override this method if hash(node) is slow for the type of node that are in use.
        """
        return node
def _node_key ( self , node : NodeType ) -> NodeKey : # pylint:disable=no-self-use return node