def _get_handling_triplet(self, node_id):
        """_get_handling_triplet(node_id) -> (handler, value, attrs)"""
        handler = self._get_handler(node_id)
        value = self[node_id]
        attrs = self._get_attrs(node_id)

        return handler, value, attrs
_get_handling_triplet(node_id) -> (handler, value, attrs)