protected AbstractMapBasedMultiset(Map<E, Count> backingMap) {
    checkArgument(backingMap.isEmpty());
    this.backingMap = backingMap;
  }

  /** Used during deserialization only. The backing map must be empty. */
  void setBackingMap(Map<E, Count> backingMap) {
    this.backingMap = backingMap;
  }

  // Required Implementations

  /**
   * {@inheritDoc}
   *

#### 2.3 Integration Points
- Extend `SmbFile` with persistent handle support
- Modify `SmbSession` for handle replay during reconnection
- Update `Smb2CreateRequest/Response` for durable contexts

---

### Phase 3: Multi-Channel Support
**Priority: MEDIUM** | **Estimated Effort: 5-6 weeks**

Multi-channel enables using multiple network connections for improved performance and reliability.

#### 3.1 Core Multi-Channel Infrastructure
```

        return projectKeys;
    }

    private Collection<String> negate(Collection<String> scopes) {
        Collection<String> result = new HashSet<>();
        Collections.addAll(result, "system", "compile", "provided", "runtime", "test");

        for (String scope : scopes) {
            if ("compile".equals(scope)) {
                result.remove("compile");
                result.remove("system");

2. **Browser header**: `Accept-Language` header
3. **Fallback**: English (from `fess_label.properties` and `fess_message.properties`)

### Document Language Detection

During crawling and indexing, Fess:

1. Detects language from document content using Apache Tika
2. Validates against `supported.languages` list
3. Creates language-specific fields (e.g., `content_ja`, `title_en`, `content_sv`)

    * ServiceDelimiter string Delimiter to use to separate overridden services (multiple services) Defaults to "&"
    * ServicenameDelimiter string Delimiter to use to separate servicename from its configuration parameters Defaults "|"
    * OverrideSeparator string Delimiter to use to separate region of occurrence, url and signing region for each override Defaults to ","

     * @param timestamp The last modified timestamp of the file.
     */
    public StopwordsFile(final String id, final String path, final Date timestamp) {
        super(id, path, timestamp);
    }

    @Override
    public String getType() {
        return STOPWORDS;
    }

    @Override
    public String getPath() {
        return path;
    }

    @Override

     * @return The session ID.
     */
    public String getSessionId() {
        return crawlerContext.sessionId;
    }

    /**
     * Sets the session ID.
     * If the new session ID is different from the current one, it updates the session ID in the URL queue service.
     * @param sessionId The new session ID.
     */
    public void setSessionId(final String sessionId) {

        assertEquals(0x00000008, response.getCapabilities());
        assertEquals(0x001F01FF, response.getMaximalAccess());
    }

    @Test
    @DisplayName("Should not modify buffer during write operation")
    void testWriteDoesNotModifyBuffer() {
        // Given
        byte[] buffer = new byte[256];
        for (int i = 0; i < buffer.length; i++) {
            buffer[i] = (byte) (i & 0xFF);

        }

        boolean isOutdated(String timestamp) {
            return timestamp != null && timestamp.compareTo(this.timestamp) > 0;
        }
    }

    private static class Key {

        private final String groupId;

        private final String artifactId;

        private final String classifier;

        private final String extension;

        private final String version;

        char[] plaintext = "TestPassword456".toCharArray();

        // Encrypt to string
        String encryptedStr = storage.encryptToString(plaintext);
        assertNotNull(encryptedStr, "Encrypted string should not be null");
        assertFalse(encryptedStr.contains("TestPassword456"), "Plaintext should not be visible in encrypted string");

        // Should be valid base64