String[][] readings1 = new String[1][];
        readings1[0] = new String[] { "doc" };
        items[0] = new SuggestItem(new String[] { "ドキュメント" }, readings1, new String[] { "content" }, 1, 0, -1, new String[] { "tag1" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

        String[][] readings2 = new String[1][];

        String[][] readings1 = new String[1][];
        readings1[0] = new String[] { "test1" };
        String[][] readings2 = new String[1][];
        readings2[0] = new String[] { "test2" };
        String[][] readings3 = new String[1][];
        readings3[0] = new String[] { "test3" };

        SuggestItem item1 = new SuggestItem(new String[] { "テスト1" }, readings1, new String[] { "content" }, 1, 0, -1,

        String[][] readings = { { "reading1" }, { "reading2" } };
        String[] fields = { "field1", "field2" };
        String[] tags = { "tag1", "tag2" };
        String[] roles = { "role1", "role2" };
        String[] languages = { "en", "ja" };
        SuggestItem.Kind kind = SuggestItem.Kind.QUERY;

        SuggestItem item = new SuggestItem(text, readings, fields, 100L, 50L, 1.5f, tags, roles, languages, kind);

        String field = "content";

        List<String> readings1 = converter1.convert(text, field, "en");
        List<String> readings2 = converter2.convert(text, field, "ja");

        assertNotNull(readings1);
        assertNotNull(readings2);
        assertEquals("TEST", readings1.get(0));
        assertEquals("TEST", readings2.get(0));
    }

    @Test

        queryItems[0] = new SuggestItem(new String[] { "検索", "エンジン" }, readings, new String[] { "content" }, 1, 0, -1, tags, roles, null,
                SuggestItem.Kind.DOCUMENT);

        String[][] readings2 = new String[2][];
        readings2[0] = new String[] { "zenbun", "fuga" };
        readings2[1] = new String[] { "kensaku", "fuga" };
        String[] tags2 = new String[] { "tag3" };

    }

    @Test
    public void testMultipleReadingsConversion() {
        // Test conversion of multiple readings to SuggestItem format
        String word = "multi reading";
        float boost = 1.0f;
        List<String> readings = Arrays.asList("reading1", "reading2", "reading3", "reading4", "reading5");
        List<String> fields = Arrays.asList("field1");
        List<String> tags = Arrays.asList("tag1");

    }

    @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,

                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);

    }

    @Test
    public void test_addLang() throws Exception {
        SuggestItem[] items = new SuggestItem[1];
        String[][] readings = new String[1][];
        readings[0] = new String[] { "test" };
        items[0] = new SuggestItem(new String[] { "test" }, readings, new String[] { "content" }, 1, 0, -1, new String[] { "tag1" },

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;
    }

    /**