*/
    public OptionalEntity<StemmerOverrideFile> getStemmerOverrideFile(final String dictId) {
        return dictionaryManager.getDictionaryFile(dictId)
                .filter(StemmerOverrideFile.class::isInstance)
                .map(file -> OptionalEntity.of((StemmerOverrideFile) file))
                .orElse(OptionalEntity.empty());
    }

    /**

    }

    /**
     * Creates a new {@link StemmerOverrideFile} instance.
     *
     * @param id        The unique identifier for the dictionary file.
     * @param path      The file path of the dictionary.
     * @param timestamp The last modified timestamp of the file.
     * @return A new {@link StemmerOverrideFile} associated with the dictionary manager.
     */
    @Override

import org.codelibs.fess.unit.UnitFessTestCase;

public class StemmerOverrideFileTest extends UnitFessTestCase {
    private StemmerOverrideFile stemmerOverrideFile;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        stemmerOverrideFile = new StemmerOverrideFile("1", "dummy", new Date());
        List<StemmerOverrideItem> itemList = new ArrayList<>();

                                    <label for="stemmeroverrideFile" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.dict_stemmeroverride_file"/></label>
                                    <div class="col-sm-9">
                                        <input type="file" id="stemmeroverrideFile" name="stemmeroverrideFile" class="form-control-file"/>

     * The multipart file containing the stemmer override rules to be uploaded.
     * This file should contain mappings that override default stemming for specific words.
     */
    @Required
    public MultipartFormFile stemmerOverrideFile;

    /**
     * Default constructor for UploadForm.
     * Creates a new instance with default values.
     */
    public UploadForm() {
        // Default constructor
    }