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

    public void test_add_2() {
        IngestFactory factory = new IngestFactory();
        factory.add(new TestIngester(3));