async def METHOD_NAME(
    robot_client: RobotClient, persistence_directory: Path
) -> None:
    # It should have no protocols.
    assert (await robot_client.get_protocols()).json()["data"] == []
    # It should have no runs.
    assert (await robot_client.get_runs()).json()["data"] == []
    # There should be no files except for robot_server.db
    # and an empty protocols/ directory.
    all_files_and_directories = set(persistence_directory.glob("**/*"))
    expected_files_and_directories = {
        persistence_directory / "robot_server.db",
        persistence_directory / "protocols",
    }
    assert all_files_and_directories == expected_files_and_directories