documentList.add(doc3);

        QueryResponseList qrList = new QueryResponseList(documentList, 0, 10, 0);

        Collection<Map<String, Object>> toRemove = Arrays.asList(doc2);
        assertTrue(qrList.removeAll(toRemove));
        assertEquals(2, qrList.size());
        assertFalse(qrList.contains(doc2));

        Collection<Map<String, Object>> toRetain = Arrays.asList(doc1);