public void testConvertWithEmptyLanguageArray() throws IOException {
        // Test convert with empty language array
        converter.init();
        String text = "test";
        String field = "content";
        String[] langs = new String[0];

        List<String> readings = converter.convert(text, field, langs);

        assertNotNull(readings);
        assertEquals(1, readings.size());

        private String reading;

        public TestAnalyzeToken(String term, int position, int startOffset, int endOffset, int positionIncrement, String type,
                java.util.Map<String, Object> attributes) {
            super(term, position, startOffset, endOffset, positionIncrement, type, attributes);
        }

        public String getReading() {
            return reading;
        }

    private long docFreq;

    private float userBoost;

    private String[][] readings;

    private String[] fields;

    private String[] tags;

    private String[] roles;

    private String[] languages;

    private Kind[] kinds;

    private Map<String, Object> emptySource;

    private String id;

    private SuggestItem() {
    }

    /**

    }

    public void test_parseCommand() {
        final CommandExtractor extractor = new CommandExtractor();

        String cmd = "";
        final Map<String, String> params = new HashMap<String, String>();
        List<String> list = extractor.parseCommand(cmd, params);
        assertEquals(0, list.size());

        cmd = "test.sh";
        params.clear();

        // Test constructor with all parameters
        String[] text = { "test", "text" };
        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;

    /** Property name for proxy authentication scheme setting */
    public static final String PROXY_AUTH_SCHEME_PROPERTY = "proxyAuthScheme";

    /** Property name for proxy credentials setting */
    public static final String PROXY_CREDENTIALS_PROPERTY = "proxyCredentials";

    /** Property name for user agent setting */
    public static final String USER_AGENT_PROPERTY = "userAgent";

     * directory.
     */
    protected String path;

    /**
     * A string to replace ?.
     */
    protected String questionStr = "_QUEST_";

    /**
     * A string to replace :.
     */
    protected String colonStr = "_CLN_";

    /**
     * A string to replace ;.
     */
    protected String semicolonStr = "_SCLN_";

    /**
     * A string to replace &.
     */

    protected String sessionId;

    /** The HTTP method used for the URL in the queue. */
    protected String method;

    /** The URL from the queue. */
    protected String url;

    /** The metadata associated with the URL queue. */
    protected String metaData;

    /** The encoding of the URL queue. */
    protected String encoding;

    }

    /**
     * Normalizes an encoding string to its preferred form.
     *
     * @param enc the encoding string to normalize
     * @return the normalized encoding or the default encoding if the input is blank
     */
    public String normalize(final String enc) {
        if (StringUtil.isBlank(enc)) {
            return defaultEncoding;
        }

        final String newEnc = encodingMap.get(toLowerCase(enc));

     */
    public static class ContentTransformer implements Transformer {
        private final String name;
        private final Map<String, String> transformationRules = new HashMap<>();

        public ContentTransformer(String name) {
            this.name = name;
        }

        public void addTransformationRule(String pattern, String replacement) {
            transformationRules.put(pattern, replacement);
        }