public List<Object> getData() {
        List<Object> result = new ArrayList<>(cells.size());
        for (QueryResponseCell cell : cells) {
            result.add(cell.getData());
        }
        return result;
    }
@Test
    void assertGetDataWhenQueryResponseCellsOfEmptyList() {
        QueryResponseRow queryResponseRow = new QueryResponseRow(Collections.emptyList());
        assertThat(queryResponseRow.getData(), is(Collections.emptyList()));
    }