def init_schema(self) -> None:
        """Initialize schema if the required tables do not exist."""
        utils.create_chunk_node_table(self.connection)
        utils.create_entity_node_tables(self.connection, entities=self.entities)
        utils.create_relation_tables(
            self.connection,
            self.entities,
            relationship_schema=self.relationship_schema,
        )
Initialize schema if the required tables do not exist.
llama-index-integrations/graph_stores/llama-index-graph-stores-kuzu/llama_index/graph_stores/kuzu/kuzu_property_graph.py