def METHOD_NAME(event_bus: EventBus, processor):
    """Test unsubscribing an unsubscribed processor does not error."""
    event_bus.unsubscribe(re.compile(".*"), processor)
    event_bus.subscribe(re.compile(".*"), processor)
    another_processor = MockProcessor()
    event_bus.unsubscribe(re.compile(".*"), another_processor)