* will return {@code Double.MAX_VALUE}, not {@code Double.POSITIVE_INFINITY}.
   *
   * <p>For the case of {@link RoundingMode#HALF_EVEN}, this implementation uses the IEEE 754
   * default rounding mode: if the two nearest representable values are equally near, the one with
   * the least significant bit zero is chosen. (In such cases, both of the nearest representable

                                "schema": {
                                    "type": "array",
                                    "items": {"type": "string"},
                                    "default": [],
                                    "title": "X Tag",
                                },
                            },
                        ],
                        "responses": {

func etcdErrToErr(err error, etcdEndpoints []string) error {
	if err == nil {
		return nil
	}
	switch err {
	case context.DeadlineExceeded:
		return fmt.Errorf("%w %s", errEtcdUnreachable, etcdEndpoints)
	default:
		return fmt.Errorf("unexpected error %w from etcd, please check your endpoints %s", err, etcdEndpoints)
	}
}

func saveKeyEtcdWithTTL(ctx context.Context, client *etcd.Client, key string, data []byte, ttl int64) error {

Boolean flag = BooleanConversionUtil.toBoolean("true");        // Returns true
Date date = DateConversionUtil.toDate("2023-12-25", "yyyy-MM-dd");

// Primitive conversions with default values
int primitiveInt = IntegerConversionUtil.toPrimitiveInt(value, "0");  // Default to 0 if null
```

### Collection Utilities with Java 21 Support
```java
import org.codelibs.core.collection.CollectionsUtil;
import java.util.SequencedCollection;

import jakarta.annotation.Resource;

/**
 * Admin action for Request Header management.
 *
 */
public class AdminReqheaderAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminReqheaderAction() {
        super();
    }

    /** Role name for admin request header operations */
    public static final String ROLE = "admin-reqheader";

    /** Base directory for command execution. */
    protected File baseDir;

    /** Timer for managing process destruction. */
    private Timer destoryTimer;

    /**
     * Default constructor for CommandGenerator.
     */
    public CommandGenerator() {
        super();
    }

    /**
     * Initializes the command generator after construction.
     */
    @PostConstruct

     * during artifact resolution, {@link #VALIDATION_LEVEL_MINIMAL} should be used to account for models of poor
     * quality. By default, models are validated in strict mode.
     *
     * @param validationLevel The level of validation to perform on processed models.
     * @return This request, never {@code null}.
     */

        try {
            MavenSession clone = (MavenSession) super.clone();
            // the default must become the current project of the thread that clones this
            MavenProject current = getCurrentProject();
            // we replace the thread local of the clone to prevent write through and enforce the new default value
            clone.currentProject = ThreadLocal.withInitial(() -> current);
            return clone;

    //                                                                           =========
    @Resource
    private SynonymService synonymService;
    @Resource
    private SynonymPager synonymPager;

    /**
     * Default constructor.
     */
    public AdminDictSynonymAction() {
        super();
    }

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

/**
 * Admin action for Access Token management.
 * This class provides CRUD operations for access tokens.
 *
 */
public class AdminAccesstokenAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminAccesstokenAction() {
        super();
    }

    private static final Logger logger = LogManager.getLogger(AdminAccesstokenAction.class);

    /**