byte[] pacData = baos.toByteArray();

        PACDecodingException e = assertThrows(PACDecodingException.class, () -> new Pac(pacData, keys));
        // The error could be about version or missing buffers
        assertNotNull(e.getMessage());
    }

    @Test
    void testUnalignedBuffer() throws IOException {
        // Create PAC with unaligned buffer offset

    private MultiChannelManager multiChannelManager;
    private Configuration config;

    @BeforeEach
    void setUp() throws Exception {
        // Create a basic configuration for testing
        this.config = new BaseConfiguration(true);
        this.multiChannelManager = new MultiChannelManager(config);
    }

    @Test
    @DisplayName("MultiChannelManager should initialize successfully")

- **Memory efficient** - Specialized collections like `LruHashMap` and `ArrayMap` for memory-conscious applications
- **Java 21 features** - Switch expressions and pattern matching for reduced overhead

## 🧪 Building and Testing

### Development Setup
```bash
# Clone the repository
git clone https://github.com/codelibs/corelib.git
cd corelib

# Compile the project
mvn clean compile

# Run all tests
mvn test

        assertTrue(conn instanceof Handler.GcsURLConnection);
        Handler.GcsURLConnection gcsConn = (Handler.GcsURLConnection) conn;

        // Use reflection to access private fields for testing
        assertEquals("mybucket", getField(gcsConn, "bucketName"));
        assertEquals("path/to/object.txt", getField(gcsConn, "objectName"));
    }

    /**
     * Test URL parsing with bucket only (no object path).

    private long sequenceNumber;
    private int returnCode;
    
    public boolean isSuccess() { return returnCode == 0; }
    // Getters and setters...
}
```

## 5. Integration with Existing Code

### 5.1 Session Integration
```java
// In SmbSession.java
private WitnessClient witnessClient;
private boolean witnessEnabled;

public void initializeWitnessSupport() {

     * @param data the data to calculate the MAC for
     * @return the calculated mac bytes
     * @throws PACDecodingException if the MAC calculation fails or required keys are missing
     */
    public static byte[] calculateMac(int type, Map<Integer, KerberosKey> keys, byte[] data) throws PACDecodingException {
        try {
            int usage = 17;

    private final UUID guid;

    /**
     * Create a new random handle GUID
     */
    public HandleGuid() {
        this.guid = UUID.randomUUID();
    }

    /**
     * Create a handle GUID from existing bytes
     * @param bytes the 16-byte GUID data in little-endian format (SMB wire format)
     */
    public HandleGuid(byte[] bytes) {
        if (bytes.length != 16) {

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.smb1.smb1;

/**
 * Filter interface for SMB file listings
 */
public interface SmbFileFilter {
    /**
     * Tests whether the specified SMB file should be included in a file list.
     *
     * @param file the SMB file to test for inclusion

        if (StringUtil.isNotBlank(sort)) {
            facetInfo.sort = sort;
        }
        final String missing = request.getParameter("facet.missing");
        if (StringUtil.isNotBlank(missing)) {
            facetInfo.missing = missing;
        }
        return facetInfo;
    }

    /**
     * Creates a geo info.
     *
     * @param request The request.

                
                // Retry
                return attemptReconnect(file, info, attempt + 1).join();
            }
        });
    }
}
```

## 6. Integration with Existing Code

### 6.1 Modifying Smb2CreateRequest
```java
// In Smb2CreateRequest.java
public void addDurableHandleContext(HandleType type, long timeout, HandleGuid guid) {
    switch (type) {
        case DURABLE_V1: