}

            final long time = Joda.forPattern(format).parseMillis(value);
            return new Date(time);
        } catch (final Exception e) {
            return null;
        }
    }

    /**
     * Formats a Date object to ISO datetime string format in UTC timezone.
     *
     * @param date the date to format
     * @return formatted date string, or empty string if date is null
     */

    public void setAppendHighlightParams(final String appendHighlightParams) {
        this.appendHighlightParams = appendHighlightParams;
    }

    /**
     * Sets the formatted execution time for the search request.
     *
     * @param execTime The formatted execution time string
     */
    public void setExecTime(final String execTime) {
        this.execTime = execTime;
    }

    /**

    <example>
      ${fe:parseDate(doc.tstamp, "yyyy-MM-dd HH:mm:ss")}
    </example>
  </function>

  <function>
    <description>
      Returns formatted duration from a given value.
    </description>
    <name>formatDuration</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>

            }
        }));
    }

    /**
     * Converts the discloser to a Slack message format.
     *
     * @param discloser the mail posting discloser
     * @return the formatted Slack message
     */
    protected String toSlackMessage(final SMailPostingDiscloser discloser) {
        final StringBuilder buf = new StringBuilder(100);
        buf.append("{\"text\":\"");
        buf.append(LF);

/**
 * Utility class for memory operations and size calculations.
 */
public final class MemoryUtil {
    private MemoryUtil() {
    }

    /**
     * Gets a formatted memory usage log string.
     *
     * @return formatted memory usage information
     */
    public static String getMemoryUsageLog() {
        final Runtime runtime = Runtime.getRuntime();
        final long freeBytes = runtime.freeMemory();

    /**
     * Formats a document source map into the target format string.
     *
     * @param source the document source map
     * @param excludeFields the set of field names to exclude from output
     * @return the formatted string
     */
    String format(Map<String, Object> source, Set<String> excludeFields);

    }

    /**
     * Creates an EditBody from a RelatedQuery entity for API responses.
     *
     * @param entity the RelatedQuery entity to convert
     * @return EditBody containing the entity data formatted for editing
     */
    protected EditBody createEditBody(final RelatedQuery entity) {
        final EditBody body = new EditBody();
        copyBeanToBean(entity, body, copyOp -> {
            copyOp.excludeNull();

    /**
     * Formats an IP address string for use in a URL.
     * IPv6 addresses are wrapped in brackets, IPv4 addresses are returned as-is.
     *
     * @param address the IP address string to format
     * @return the formatted address (IPv6 with brackets, IPv4 unchanged)
     */
    public static String formatForUrl(final String address) {
        if (address == null) {
            return null;
        }
        if (isIPv6Address(address)) {

        String result = buf.toString();
        assertTrue(result.startsWith("\"timestamp\":\""));
        assertTrue(result.endsWith("\""));
        // Verify a timestamp was properly formatted
        assertNotNull(result);
        assertTrue(result.length() > "\"timestamp\":\"\"".length());
    }

    // Test appendException method with simple exception
    @Test

    /**
     * Builds the complete query string from the configured parameters.
     * Combines base query, extra queries, field filters, and sort field into a single query string.
     *
     * @return the complete formatted query string
     */
    public String build() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final int maxQueryLength = fessConfig.getQueryMaxLengthAsInteger();