*/
    protected FessFunctions() {
        // nothing
    }

    /**
     * Generates an HTML opening or closing tag with appropriate language attribute.
     *
     * @param isOpen true to generate opening HTML tag, false for closing tag
     * @return HTML opening tag with language attribute or closing tag
     */
    public static String html(final boolean isOpen) {
        if (isOpen) {

            fos.write("Test data for deletion".getBytes());
        }

        String filePath = tempFile.getAbsolutePath();
        assertTrue("Temp file should exist before opening stream", tempFile.exists());

        TemporaryFileInputStream stream = new TemporaryFileInputStream(tempFile);
        stream.read(); // Read some data
        stream.close();

mvn test                       # Run tests
mvn formatter:format           # Format code
mvn license:format             # Update license headers
```

### Code Style

- 4 spaces (no tabs)
- Opening brace on same line
- Max line length: 120
- JavaDoc required for public APIs
- License headers required

### Testing

**Structure**: `src/test/java/org/codelibs/fess/crawler/`

    }

    protected abstract String doBuildColumnString(String dm);

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override
    public String buildDisplayString(String name, boolean column, boolean relation) { // #pending
        return toString();
    }

    // ===================================================================================

                throw new DictionaryException("Failed to write: " + line, e);
            }
        }

        /**
         * Commits any pending changes and marks the updater for final write.
         *
         * @return the committed mapping item, or null if no item was pending
         */
        public CharMappingItem commit() {
            isCommit = true;
            if (item != null && item.isUpdated()) {

    //                                                                              ======
    @Override
    protected int delegateSelectCountUniquely(final ConditionBean cb) {
        // #pending check response and cast problem
        final SearchRequestBuilder builder = client.prepareSearch(asEsIndex());
        final EsAbstractConditionBean esCb = (EsAbstractConditionBean) cb;
        if (esCb.getPreference() != null) {

    //                                                                              ======
    @Override
    protected int delegateSelectCountUniquely(final ConditionBean cb) {
        // #pending check response and cast problem
        final SearchRequestBuilder builder = client.prepareSearch(asEsIndex());
        final EsAbstractConditionBean esCb = (EsAbstractConditionBean) cb;
        if (esCb.getPreference() != null) {

    //                                                                              ======
    @Override
    protected int delegateSelectCountUniquely(final ConditionBean cb) {
        // #pending check response and cast problem
        final SearchRequestBuilder builder = client.prepareSearch(asEsIndex());
        final EsAbstractConditionBean esCb = (EsAbstractConditionBean) cb;
        if (esCb.getPreference() != null) {

            }
        }
        return target;
    }

    /**
     * Commits any remaining documents in the cache to the index.
     * This method ensures all pending documents are processed.
     */
    @Override
    public void commit() {
        synchronized (docList) {
            if (!docList.isEmpty()) {

                throw new DictionaryException("Failed to write: " + line, e);
            }
        }

        /**
         * Commits the changes to the dictionary file.
         * If there is a pending new item, it is written to the file.
         *
         * @return The committed item, or null if no item was committed.
         * @throws DictionaryException if an I/O error occurs.
         */