def get_schema(self, refresh: bool = False) -> Any:
        """Get the schema of the graph store."""
        if refresh or not self.schema:
            schema = refresh_schema(self.query, self._get_summary())
            self.schema = schema["schema_str"]
            self.structured_schema = schema["structured_schema"]
        return self.structured_schema
Get the schema of the graph store.
llama-index-integrations/graph_stores/llama-index-graph-stores-neptune/llama_index/graph_stores/neptune/base_property_graph.py