public UniVocityFixedDataFormat setFieldLengths(int[] fieldLengths) {
        this.fieldLengths = fieldLengths;
        return this;
    }
@Test
    public void shouldConfigureLineSeparator() {
        UniVocityFixedDataFormat dataFormat = new UniVocityFixedDataFormat()
                .setFieldLengths(new int[] { 1, 2, 3 })
                .setLineSeparator("ls");

        assertEquals("ls", dataFormat.getLineSeparator());
        assertEquals("ls", dataFormat.createAndConfigureWriterSettings().getFormat().getLineSeparatorString());
        assertEquals("ls", dataFormat.createAndConfigureParserSettings().getFormat().getLineSeparatorString());
    }