public Object getCell(final int columnIndex) {
        Preconditions.checkArgument(columnIndex > 0 && columnIndex < data.size() + 1);
        return data.get(columnIndex - 1);
    }
@Test
    void assertGetCellWithNullValue() {
        LocalDataQueryResultRow actual = new LocalDataQueryResultRow(null, null);
        assertThat(actual.getCell(1), is(""));
        assertThat(actual.getCell(2), is(""));
    }