// Test multiple calls to ensure consistency
        long memory1 = MemoryUtil.getUsedMemory();
        assertTrue(memory1 >= 0);

        // Create some objects to change memory usage
        @SuppressWarnings("unused")
        String[] largeArray = new String[1000];
        for (int i = 0; i < 1000; i++) {
            largeArray[i] = "test" + i;
        }

        long memory2 = MemoryUtil.getUsedMemory();

    }

    protected FessCookieResourceProvider createCookieResourceProvider() { // #change_it_first
        final InvertibleCryptographer cr = InvertibleCryptographer.createAesCipher("*unused@");
        return new FessCookieResourceProvider(fessConfig, cr);
    }

    protected FessActionAdjustmentProvider createActionAdjustmentProvider() {
        return new FessActionAdjustmentProvider(fessConfig);

     * Processes HTTP, HTTPS, file, SMB, and FTP URLs appropriately.
     *
     * @param url the URL to extract filename from
     * @param encoding the character encoding (currently unused in this method)
     * @return the extracted filename, or empty string if none found
     */
    default String getFileName(final String url, final String encoding) {
        if (StringUtil.isBlank(url)) {

    }

    /**
     * Helper class for testing that unregistered custom classes are rejected.
     */
    private static class CustomTestClass {
        @SuppressWarnings("unused")
        private final String value;

        CustomTestClass(String value) {
            this.value = value;
        }
    }

        return resource -> {
            final AccessContext context = new AccessContext();
            context.setAccessLocalDateTimeProvider(() -> timeManager.currentDateTime());
            context.setAccessUserProvider(() -> "unused");
            return context;
        };
    }

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

     *
     * @param prefix the line number prefix pattern
     * @param style the CSS class name for styling
     * @param mimetype the MIME type of the content (currently unused)
     * @param input the code content to format
     * @return HTML formatted code with line numbers and styling
     */