def METHOD_NAME(postgres_dsn: PostgresTestConfig) -> sa.engine.Engine:
    postgres_dsn_copy = postgres_dsn.copy()  # make a copy to change these parameters
    postgres_dsn_copy["database"] = "postgres"
    dsn = "postgresql://{user}:{password}@{host}:{port}/{database}".format(
        **postgres_dsn_copy
    )
    return sa.create_engine(dsn, isolation_level="AUTOCOMMIT")