factory.add(new TestIngester(3));
        factory.add(new TestIngester(2));
        factory.add(new TestIngester(1));
        Ingester[] ingesters = factory.getIngesters();
        assertEquals(1, ingesters[0].getPriority());
        assertEquals(2, ingesters[1].getPriority());
        assertEquals(3, ingesters[2].getPriority());
    }

    private static class TestIngester extends Ingester {