private
        fun newSimpleDateFormatUTC(pattern: String) = SimpleDateFormat(pattern).apply {
            timeZone = TimeZone.getTimeZone("UTC")
        }

        fun readBuildReceiptFromString(buildReceipt: String) =
            Properties().apply { load(buildReceipt.reader()) }

        const val buildReceiptFileName = "build-receipt.properties"

    );

    private final Level minLevel;

    /**
     * Constructs a new LogNotificationAppender.
     *
     * @param name the appender name
     * @param filter the filter to apply
     * @param layout the layout to use
     * @param ignoreExceptions whether to ignore exceptions
     * @param properties the appender properties
     * @param minLevel the minimum log level to capture
     */

        for (final UnaryOperator<String> rule : docSettingRewriteRuleList) {
            source = rule.apply(source);
        }
        return source;
    }

    /**
     * Adds a rewrite rule for document settings.
     *
     * @param rule the rewrite rule to apply to document settings
     */
    public void addDocumentSettingRewriteRule(final UnaryOperator<String> rule) {

            protected boolean tryStartOperation(final String operationName, final String data, final int remainingRetries) {
                // Simulate: create always fails (no OpenSearch)
                // Then apply the retry logic from the real implementation
                if (remainingRetries <= 0) {
                    return false;
                }
                return tryCleanupAndRetry(operationName, data, remainingRetries);