final Map<String, Object> secondLine = new HashMap<>();

        secondLine.put("text", item.getText());

        // reading
        final String[][] readings = item.getReadings();
        for (int i = 0; i < readings.length; i++) {
            secondLine.put("reading_" + i, readings[i]);
        }

        secondLine.put("fields", item.getFields());
        secondLine.put("queryFreq", item.getQueryFreq());

    // Tests for reading arrays edge cases
    // ============================================================

    @Test
    public void test_manyReadingsForOneWord() {
        String[] text = { "test" };
        String[][] readings = { { "reading1", "reading2", "reading3", "reading4", "reading5", "reading6", "reading7", "reading8",
                "reading9", "reading10" } };

    protected void setUp() throws Exception {
        file1 = File.createTempFile("kuromoji_", ".txt");
        FileUtil.write(
                file1.getAbsolutePath(),
                "token1,seg1,reading1,pos1\ntoken2,seg2,reading2,pos2\ntoken3,seg3,reading3,pos3"
                        .getBytes(Constants.UTF_8));
    }

    @Override
        protected void tearDown(TestInfo testInfo) throws Exception {
        file1.delete();
    }

        // Multiple spaces should be collapsed to single space
        assertTrue("Should query reading_0", queryString.contains("reading_0"));
        assertTrue("Should query reading_1", queryString.contains("reading_1"));
        // Should NOT have reading_2 (spaces collapsed)
        assertFalse("Should not have reading_2", queryString.contains("reading_2"));
    }

    @Test
    public void test_buildQuery_withNormalizer() {

    }

    @Test
    public void testCreateBulkLineWithMultipleReadings() {
        // Test with multiple reading levels
        SuggestItem item = new SuggestItem(new String[] { "test" },
                new String[][] { { "reading1a", "reading1b" }, { "reading2a", "reading2b" }, { "reading3" } }, new String[] { "field1" }, 5,

        String[][] readings = { { "reading1" } };
        String[] fields = { "field1" };
        String[] tags = { "tag1" };
        String[] roles = { "role1" };
        String[] languages = { "en" };
        long docFreq = 10L;
        long queryFreq = 5L;
        float userBoost = 1.5f;

        SuggestItem item =

                if (readings != null && readings.length > i && readings[i].length > 0) {
                    for (final String reading : readings[i]) {
                        if (!l.contains(reading)) {
                            l.add(reading);
                        }
                    }
                }

                wordsList.add(word);

        Suggester suggester = createSuggester();
        suggester.createIndexIfNothing();

        // Index some data
        String[][] readings = new String[1][];
        readings[0] = new String[] { "test" };
        SuggestItem item = new SuggestItem(new String[] { "テスト" }, readings, new String[] { "content" }, 1, 0, -1, new String[] { "tag1" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

            final boolean apply) {
        final String[] readings;
        if (StringUtil.isBlank(reading)) {
            readings = word.replace("　", TEXT_SEP).replaceAll(TEXT_SEP + "+", TEXT_SEP).split(TEXT_SEP);
        } else {
            readings = reading.replace("　", TEXT_SEP).replaceAll(TEXT_SEP + "+", TEXT_SEP).split(TEXT_SEP);
        }

        final List<String> labelList = new ArrayList<>();
        if (tags != null) {

import java.io.IOException;
import java.util.List;

/**
 * Interface for converting text into its reading form.
 */
public interface ReadingConverter {

    /**
     * Returns the maximum number of readings.
     *
     * @return the maximum number of readings, default is 10.
     */
    default int getMaxReadingNum() {
        return 10;
    }

    /**