def _structure_value(node: Any) -> Optional[str]:
            """Get the structure value for a node."""
            return (
                "table"
                if node.tag == TABLE_NAME
                else node.attrib["structure"]
                if "structure" in node.attrib
                else None
            )
Get the structure value for a node.
llama-index-integrations/readers/llama-index-readers-docugami/llama_index/readers/docugami/base.py