List<Map<String, Object>> moreDocs = new ArrayList<>();
        Map<String, Object> doc3 = new HashMap<>();
        doc3.put("title", "Doc3");
        moreDocs.add(doc3);

        assertTrue(qrList.addAll(1, moreDocs));
        assertEquals(3, qrList.size());
        assertEquals(doc1, qrList.get(0));
        assertEquals(doc3, qrList.get(1));
        assertEquals(doc2, qrList.get(2));
    }