String[] roles = { "admin", "user" };
        item.setRoles(roles);
        assertArrayEquals(roles, item.getRoles());

        // Test languages
        String[] languages = { "en", "fr" };
        item.setLanguages(languages);
        assertArrayEquals(languages, item.getLanguages());

        // Test kinds
        SuggestItem.Kind[] kinds = { SuggestItem.Kind.DOCUMENT, SuggestItem.Kind.QUERY };

# Adding a New Language to Fess

This guide explains how to add internationalization (i18n) support for a new language in Fess.

## Overview

Fess uses a two-tier language support system:

1. **Full UI Translation** (13 languages): Complete user interface translation with label and message files
2. **Search/Analysis Support** (40+ languages): Language-specific text analysis for search indexing

        String text = "test text";
        String field = "content";

        List<String> results = converter.convert(text, field, "en", "ja");

        assertNotNull(results);
        // With multiple languages, should use ReadingConverterChain
    }

    @Test
    public void testConvertWithEmptyText() throws IOException {
        // Test convert with empty text

            } catch (final IllegalArgumentException e) {
                return analyze(text, field, lang);
            }
        }
    }

    /**
     * Check if the language is supported.
     * @param lang Language
     * @return True if the language is supported
     */
    public static boolean isSupportedLanguage(final String lang) {

        this.skipDuplicateWords = skipDuplicateWords;
    }

    /**
     * Adds a language to filter by.
     * @param lang The language.
     */
    public void addLang(final String lang) {
        languages.add(lang);
    }

    @Override
    protected String getValidationError() {
        return null;
    }

    @Override

        this.hitCountRelation = value;
    }

    public String getLanguages() {
        checkSpecifiedProperty("languages");
        return convertEmptyToNull(languages);
    }

    public void setLanguages(String value) {
        registerModifiedProperty("languages");
        this.languages = value;
    }

    public String getQueryId() {
        checkSpecifiedProperty("queryId");

        assertNotNull(readings);
        assertTrue(readings.isEmpty());
    }

    @Test
    public void testConvertWithMultipleLanguages() throws IOException {
        // Test convert with multiple languages
        converter.init();
        String text = "test";
        String field = "content";

        List<String> readings = converter.convert(text, field, "en", "ja", "fr");

        assertNotNull(readings);

true,\"aggregatable\":true,\"readFromDocValues\":true},{\"name\":\"hitCountRelation\",\"type\":\"string\",\"esTypes\":[\"keyword\"],\"count\":0,\"scripted\":false,\"searchable\":true,\"aggregatable\":true,\"readFromDocValues\":true},{\"name\":\"languages\",\"type\":\"string\",\"esTypes\":[\"keyword\"],\"count\":0,\"scripted\":false,\"searchable\":true,\"aggregatable\":true,\"readFromDocValues\":true},{\"name\":\"order\",\"type\":\"number\",\"esTypes\":[\"integer\"],\"count\":0,\"scripted\":false...

        }

        return new String[0];
    }

    /**
     * Check if the search word is excluded.
     * @param searchWord Search word
     * @param field Field
     * @param langs Languages
     * @param analyzer Analyzer
     * @return True if the search word is excluded
     */
    protected boolean isExcludeSearchword(final String searchWord, final String field, final String[] langs,

     */
    public void setRoles(final String[] roles) {
        this.roles = roles;
    }

    /**
     * Sets the languages of the suggest item.
     * @param languages The languages to set.
     */
    public void setLanguages(final String[] languages) {
        this.languages = languages;
    }

    /**
     * Sets the kinds of the suggest item.
     * @param kinds The kinds to set.
     */