/**
     * ISO 8601 extended format: yyyy-MM-dd'T'HH:mm:ss.SSSZ
     */
    public static final String DATE_FORMAT_ISO_8601_EXTEND = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";

    /**
     * ISO 8601 extended UTC format: yyyy-MM-dd'T'HH:mm:ss.SSS'Z'
     */
    public static final String DATE_FORMAT_ISO_8601_EXTEND_UTC = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";

    /**
     * Digit only date format: yyyyMMddHHmmss

 * <td rowspan="4">Standard formats of {@link DateFormat}</td>
 * <td>{@link DateFormat#SHORT} format</td>
 * <td>{@literal yy/MM/dd}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#MEDIUM} format</td>
 * <td>{@literal yyyy/MM/dd}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#LONG} format</td>
 * <td>{@literal yyyy/MM/dd}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#FULL} format</td>
 * <td>{@literal yyyy'nen'M'gatsu'd'nichi'}</td>

 * <td>{@literal yy/MM/dd H:mm}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#MEDIUM} format</td>
 * <td>{@literal yyyy/MM/dd H:mm:ss}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#LONG} format</td>
 * <td>{@literal yyyy/MM/dd H:mm:ss z}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#FULL} format</td>
 * <td>{@literal yyyy'年'M'月'd'日' H'時'mm'分'ss'秒' z}</td>
 * </tr>
 * </table>
 *

     * Maximum length is 10000 characters.
     */
    @Size(max = 10000)
    public String parameterName;

    /**
     * The expiration date and time for the access token.
     * Must be in ISO 8601 format: YYYY-MM-DDTHH:MM:SS
     */
    @Pattern(regexp = "[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]")
    public String expires;

    /**
     * The username of the user who created this access token.

Integer nullValue = IntegerConversionUtil.toInteger(null);     // Returns null
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

    BiPredicate<ImmutableSetMultimap<?, ?>, ImmutableSetMultimap<?, ?>> equivalence =
        Equivalence.equals()
            .onResultOf(
                (ImmutableSetMultimap<?, ?> mm) ->
                    ImmutableListMultimap.copyOf(mm).asMap().entrySet().asList())
            .and(Equivalence.equals());
    CollectorTester.of(collector, equivalence)
        .expectCollects(ImmutableSetMultimap.of())
        .expectCollects(

    public String queryId;

    /** User session ID filter for search logs. */
    public String userSessionId;

    /** Time range filter for search logs (format: "yyyy-MM-dd HH:mm - yyyy-MM-dd HH:mm"). */
    public String requestedTimeRange;

    /** Access type filter for search logs (web, json, gsa, admin, other). */
    public String accessType;

    /**

            if (pos != -1) {
                buf.replace(pos, pos + 1, "HH");
            }
        }
        if (buf.indexOf("mm") == -1) {
            final int pos = buf.indexOf("m");
            if (pos != -1) {
                buf.replace(pos, pos + 1, "mm");
            }
        }
        if (buf.indexOf("ss") == -1) {
            final int pos = buf.indexOf("s");
            if (pos != -1) {

    /**
     * The default charset.
     */
    public static final Charset DEFAULT_CHARSET;

    /**
     * The ISO date-time format.
     */
    public static final String ISO_DATETIME_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";

    /**
     * The feature for secure processing in XML.
     */
    public static final String FEATURE_SECURE_PROCESSING = "http://javax.xml.XMLConstants/feature/secure-processing";

     */
    private String loc;

    /**
     * The date of last modification of the file. This date should be in W3C
     * Datetime format. This format allows you to omit the time portion, if
     * desired, and use YYYY-MM-DD.
     *
     * Note that this tag is separate from the If-Modified-Since (304) header
     * the server can return, and search engines may use the information from
     * both sources differently.
     */