}

    @Test
    @DisplayName("Test length returns correct end of file size")
    void testLength() throws SMBProtocolDecodingException {
        // Prepare test data
        byte[] buffer = createValidBuffer("file.txt", "FILE~1.TXT", true);
        long expectedEndOfFile = 1024L * 1024L; // 1MB
        SMBUtil.writeInt8(expectedEndOfFile, buffer, 40);

     *
     * @param id the backup file ID to download
     * @return stream response containing the backup file data
     */
    // GET /api/admin/backup/file/{id}
    @Execute
    public StreamResponse get$file(final String id) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

    }

    /**
     * The name of the design file being edited.
     * This specifies which template or design file to modify.
     */
    public String fileName;

    /**
     * The content of the design file.
     * This contains the actual template code, CSS, or other design content
     * that will be saved to the specified file.
     */
    public String content;

        body.dictId = dictId;
        validateApi(body, messages -> {});
        return charMappingService.getCharMappingFile(body.dictId)
                .map(file -> asStream(new File(file.getPath()).getName()).contentTypeOctetStream().stream(out -> {
                    file.writeOut(out);
                }))
                .orElseGet(() -> {

    }

    /**
     * Checks if a file exists at the specified path within the servlet context.
     *
     * @param path the file path relative to the servlet context
     * @return true if the file exists, false otherwise
     */
    public static boolean fileExists(final String path) {
        final File file = new File(LaServletContextUtil.getServletContext().getRealPath(path));

    // - Can cache file existence queries
    // - Can cache basic file attributes
    
    // HANDLE_CACHING for directories means:
    // - Can keep directory handle open
    // - Can cache subdirectory handles
    
    // WRITE_CACHING for directories means:
    // - Can cache file creation/deletion notifications
    // - Can perform optimistic file operations
    
    // Directory-specific combinations

        body.dictId = dictId;
        validateApi(body, messages -> {});
        return stemmerOverrideService.getStemmerOverrideFile(body.dictId)
                .map(file -> asStream(new File(file.getPath()).getName()).contentTypeOctetStream().stream(out -> {
                    file.writeOut(out);
                }))
                .orElseGet(() -> {

        }

        // Reasonable upper limit (1TB)
        long maxSize = 1099511627776L;
        if (size > maxSize) {
            failedValidations.incrementAndGet();
            log.warn("File size exceeds reasonable limit: {} > {}", size, maxSize);
            throw new SmbException("File size exceeds limit: " + size);
        }
    }

    /**
     * Validate offset and length for file operations

                fConfig.setExcludedPaths(getDefaultString("default.config.file.excludedPaths", StringUtil.EMPTY));
                fConfig.setIncludedDocPaths(getDefaultString("default.config.file.includedDocPaths", StringUtil.EMPTY));
                fConfig.setIncludedPaths(getDefaultString("default.config.file.includedPaths", StringUtil.EMPTY));

        assertEquals((byte) 0x00, dst[1]); // Null terminator for empty old file name
        assertEquals((byte) 0x04, dst[2]); // Second buffer format byte
    }

    /**
     * Test writeBytesWireFormat with special characters in file names
     */
    @Test
    @DisplayName("Test writeBytesWireFormat with special characters in file names")
    public void testWriteBytesWireFormatSpecialCharacters() {
        // Given