private static OptionalEntity<StemmerOverrideItem> getEntity(final CreateForm form) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            final StemmerOverrideItem entity = new StemmerOverrideItem(0, StringUtil.EMPTY, StringUtil.EMPTY);
            return OptionalEntity.of(entity);
        case CrudMode.EDIT:
            if (form instanceof EditForm) {

    }

    @Override
    public synchronized OptionalEntity<StemmerOverrideItem> get(final long id) {
        if (stemmerOverrideItemList == null) {
            reload(null);
        }

        for (final StemmerOverrideItem stemmerOverrideItem : stemmerOverrideItemList) {
            if (id == stemmerOverrideItem.getId()) {
                return OptionalEntity.of(stemmerOverrideItem);
            }
        }

import org.codelibs.fess.opensearch.config.exentity.WebAuthentication;
import org.codelibs.fess.util.ParameterUtil;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for managing web authentication configurations.
 * Provides CRUD operations for web authentication settings including

        for (final File file : fileList) {
            if (targetFile.equals(file)) {
                return OptionalEntity.of(targetFile);
            }
        }
        return OptionalEntity.empty();
    }

    private List<File> getAccessibleFileList(final File baseDir) {
        final List<File> fileList = new ArrayList<>(

import org.codelibs.fess.opensearch.config.exbhv.RoleTypeBhv;
import org.codelibs.fess.opensearch.config.exentity.RoleType;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for managing role types.
 */
public class RoleTypeService {

    /**
     * Constructor.
     */
    public RoleTypeService() {

     * @param currentTime current timestamp
     * @return optional ElevateWord entity
     */
    public static OptionalEntity<ElevateWord> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new ElevateWord()).map(entity -> {
                entity.setCreatedBy(username);

    }

    @Override
    public synchronized OptionalEntity<SynonymItem> get(final long id) {
        if (synonymItemList == null) {
            reload(null);
        }

        for (final SynonymItem synonymItem : synonymItemList) {
            if (id == synonymItem.getId()) {
                return OptionalEntity.of(synonymItem);
            }
        }
        return OptionalEntity.empty();
    }

    @Override

     */
    public OptionalEntity<FessUser> login(final String username, final String password) {
        // Add defensive null/blank checks
        if (StringUtil.isBlank(username) || StringUtil.isBlank(password)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Login failed: username or password is blank");
            }
            return OptionalEntity.empty();
        }

     * @return optional entity containing the scheduled job data, or empty if creation fails
     */
    private static OptionalEntity<ScheduledJob> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new ScheduledJob()).map(entity -> {
                entity.setCreatedBy(username);

import org.codelibs.fess.opensearch.config.exentity.LabelType;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for label types.
 */
public class LabelTypeService extends FessAppService {

    /** The LabelType behavior. */
    @Resource