if ((newState & Smb2LeaseState.SMB2_LEASE_READ_CACHING) == 0) {
                // Lost read cache - invalidate directory cache
                entry.invalidate();
            }
        } else {
            // Lease completely broken - invalidate cache
            entry.invalidate();
        }

        if ((newState & Smb2LeaseState.SMB2_LEASE_HANDLE_CACHING) == 0) {

        invalidateSet.forEach(s -> excludeFilterCache.invalidate(s));
    }

    /**
     * Deletes all URL filters for the specified session.
     *
     * @param sessionId The session ID.
     */
    @Override
    public void delete(final String sessionId) {
        deleteBySessionId(sessionId);
        includeFilterCache.invalidate(sessionId);
        excludeFilterCache.invalidate(sessionId);
    }

    /**

        
        // Invalidate affected cache entries
        DirectoryCacheEntry entry = leaseManager.getCacheEntry(directoryPath);
        if (entry != null) {
            entry.removeChild(fileName);
            
            // If too many inconsistencies, invalidate entire cache
            if (entry.getInconsistencyCount() > 5) {
                entry.invalidate();
            }
        }
    }

                    this.currentHash = newHash.clone();
                }
            }
        }

        public boolean isValid() {
            return isValid;
        }

        public void invalidate() {
            this.isValid = false;
            // Clear sensitive data
            synchronized (hashLock) {
                Arrays.fill(currentHash, (byte) 0);
            }
        }
    }

     */
    public boolean isValid() {
        return valid;
    }

    /**
     * Invalidate this memory region
     *
     * After invalidation, the region cannot be used for RDMA operations.
     */
    public abstract void invalidate();

    /**
     * Generate local key for this memory region
     *
     * @return local key
     */

        entry.updateChild("file1.txt", 1024L, 1000L, false, 0x20, 500L, 800L);
        entry.updateChild("file2.txt", 2048L, 2000L, false, 0x20, 600L, 900L);
        entry.markComplete();

        // Invalidate the cache
        entry.invalidate();

        assertFalse(entry.isComplete());
        assertTrue(entry.hasChanges());
        assertTrue(entry.getChildren().isEmpty());
    }

    @Test

    cache.put(0, 10);

    assertEquals(Integer.valueOf(10), cache.get(0, loader));
    assertEquals(Integer.valueOf(1), cache.get(20, loader));
    assertEquals(Integer.valueOf(2), cache.get(34, loader));

    cache.invalidate(0);
    assertEquals(Integer.valueOf(3), cache.get(0, loader));

    cache.put(0, 10);
    cache.invalidateAll();
    assertEquals(Integer.valueOf(4), cache.get(0, loader));
  }

            this.lastUpdateTime = System.currentTimeMillis();
        } finally {
            lock.writeLock().unlock();
        }
    }

    /**
     * Invalidate the cache
     */
    public void invalidate() {
        lock.writeLock().lock();
        try {
            children.clear();
            isComplete = false;
            hasChanges = true;
        } finally {

            if (Smb2LeaseState.hasWriteCaching(oldState) && !Smb2LeaseState.hasWriteCaching(newState)) {
                flushCachedWrites(entry.getPath());
            }

            // Invalidate cached data if losing read cache
            if (Smb2LeaseState.hasReadCaching(oldState) && !Smb2LeaseState.hasReadCaching(newState)) {
                invalidateReadCache(entry.getPath());
            }

     * @param access access permissions (ignored for TCP)
     */
    public TcpMemoryRegion(ByteBuffer buffer, EnumSet<RdmaAccess> access) {
        super(buffer, access);
    }

    @Override
    public void invalidate() {
        // No real invalidation needed for TCP
        valid = false;
    }

    @Override
    protected int generateLocalKey() {
        return keyGenerator.getAndIncrement();
    }

    @Override