return StringUtil.EMPTY;
        }
        return date.format(DateTimeFormatter.ofPattern(Constants.ISO_DATETIME_FORMAT, Locale.ROOT));
    }

    /**
     * Formats a ZonedDateTime object using the specified format pattern.
     *
     * @param date the ZonedDateTime to format
     * @param format the date format pattern
     * @return formatted date string, or empty string if date is null
     */

                }).collect(Collectors.joining("\n")));
    }

    /**
     * Converts a GSA URL pattern into a regular expression pattern suitable for Fess.
     * Handles various GSA pattern formats including regexp, contains, and URL-based patterns.
     *
     * @param s the input GSA pattern string
     * @return a regular expression pattern string, or empty string for comments/invalid patterns
     */

import jakarta.annotation.PostConstruct;

/**
 * The helper for user activities.
 * This class provides methods to log user actions such as login, logout, and access.
 * It supports both LTSV and ECS log formats.
 *
 */
public class ActivityHelper {

    /**
     * Default constructor.
     */
    public ActivityHelper() {
        // Default constructor
    }

    /**
     * The logger.
     */

          thread.setUncaughtExceptionHandler(uncaughtExceptionHandler);
        }
        return thread;
      }
    };
  }

  private static String format(String format, Object... args) {
    return String.format(Locale.ROOT, format, args);
  }

        try {
            queryFieldConfig.init();
            // Should handle invalid formats gracefully
            // Check that only valid entries are added
            assertTrue(queryFieldConfig.additionalDefaultList.size() >= 0);
        } catch (NumberFormatException e) {
            // Expected for invalid float format
        }
    }

    public void test_init_withEmptyAndWhitespaceAnalyzedFields() {

        // Setup mock request manager with invalid format
        RequestManager mockRequestManager = createMockRequestManager("invalid_locale_format");

        // Execute
        OptionalThing<Locale> result = provider.findBusinessLocale(null, mockRequestManager);

        // Verify - invalid format should return empty due to exception in LocaleUtils.toLocale
        assertFalse(result.isPresent());

  /**
   * UTF-8: eight-bit UCS Transformation Format.
   *
   * @deprecated Use {@link StandardCharsets#UTF_8} instead.
   */
  @Deprecated public static final Charset UTF_8 = StandardCharsets.UTF_8;

  /**
   * UTF-16BE: sixteen-bit UCS Transformation Format, big-endian byte order.
   *
   * @deprecated Use {@link StandardCharsets#UTF_16BE} instead.
   */

    verify(true, "%s", IGNORE_ME);
  }

  public void testVerify_complexMessage_failure() {
    VerifyException expected = assertThrows(VerifyException.class, () -> verify(false, FORMAT, 5));
    checkMessage(expected);
  }

  private static final String NON_NULL_STRING = "foo";

  public void testVerifyNotNull_simple_success() {
    String result = verifyNotNull(NON_NULL_STRING);

        // Verify the string format
        assertNotNull(result);
        assertTrue(result.contains("FessUserTimeZoneProcessProvider"));
        assertTrue(result.contains("useTimeZoneHandling=false"));
        assertTrue(result.contains("acceptCookieTimeZone=false"));
        assertTrue(result.contains("@"));

        // Verify that hashCode is included in hex format

   * normal conditions.
   *
   * <p><b>Note:</b> For most string-formatting needs, use {@link String#format String.format},
   * {@link java.io.PrintWriter#format PrintWriter.format}, and related methods. These support the
   * full range of <a
   * href="https://docs.oracle.com/javase/9/docs/api/java/util/Formatter.html#syntax">format
   * specifiers</a>, and alert you to usage errors by throwing {@link
   * java.util.IllegalFormatException}.