def METHOD_NAME(self, subj: str, rel: str, obj: str) -> None:
    """Add triplet."""
    query = """
        MERGE (n1:`%s` {id:$subj})
        MERGE (n2:`%s` {id:$obj})
        MERGE (n1)-[:`%s`]->(n2)
    """
    prepared_statement = query % (
        self._node_label,
        self._node_label,
        rel.replace(" ", "_").upper(),
    )
    # Call FalkorDB with prepared statement
    self._driver.query(prepared_statement, params={"subj": subj, "obj": obj})