key8[0] = (byte) (key7[0] >> 1 & 0xff);
        key8[1] = (byte) (((key7[0] & 0x01) << 6 | (key7[1] & 0xff) >> 2 & 0xff) & 0xff);
        key8[2] = (byte) (((key7[1] & 0x03) << 5 | (key7[2] & 0xff) >> 3 & 0xff) & 0xff);
        key8[3] = (byte) (((key7[2] & 0x07) << 4 | (key7[3] & 0xff) >> 4 & 0xff) & 0xff);
        key8[4] = (byte) (((key7[3] & 0x0F) << 3 | (key7[4] & 0xff) >> 5 & 0xff) & 0xff);

        byte[] src = new byte[200];
        // Setup minimal valid header
        src[0] = 0x00;
        src[1] = 0x01; // Transaction ID
        src[2] = 0x00; // Flags
        src[3] = 0x00; // Flags
        src[4] = 0x00;
        src[5] = 0x01; // Question count

        // Act
        int result = nodeStatusRequest.readWireFormat(src, 0);

        // Assert

        assertEquals(0x8, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_SIZE);
        assertEquals(0x10, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_LAST_WRITE);
        assertEquals(0x20, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_LAST_ACCESS);
        assertEquals(0x40, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_CREATION);
        assertEquals(0x80, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_EA);

        buffer[0] = 0x03;
        buffer[1] = 0x00;
        // isEndOfSearch (2 bytes)
        buffer[2] = 0x00; // end of search = false
        buffer[3] = 0x00;
        // eaErrorOffset (2 bytes)
        buffer[4] = 0x00;
        buffer[5] = 0x00;
        // lastNameOffset (2 bytes)
        buffer[6] = 0x08;
        buffer[7] = 0x00;

        SmbNegotiationResponse anotherResponse = mock(SmbNegotiationResponse.class);
        byte[] anotherRequestBuffer = new byte[] { 0x10, 0x20 };
        byte[] anotherResponseBuffer = new byte[] { 0x30, 0x40 };

        SmbNegotiation anotherNegotiation =
                new SmbNegotiation(anotherRequest, anotherResponse, anotherRequestBuffer, anotherResponseBuffer);

  const val FLAG_END_HEADERS = 0x4 // Used for headers and continuation.
  const val FLAG_END_PUSH_PROMISE = 0x4
  const val FLAG_PADDED = 0x8 // Used for headers and data.
  const val FLAG_PRIORITY = 0x20 // Used for headers.
  const val FLAG_COMPRESSED = 0x20 // Used for data.

  /** Lookup table for valid frame types. */
  private val FRAME_NAMES =
    arrayOf(
      "DATA",
      "HEADERS",
      "PRIORITY",
      "RST_STREAM",

 */
public class NameServiceClientImpl implements Runnable, NameServiceClient {

    private static final int NAME_SERVICE_UDP_PORT = 137;

    static final byte[] UNKNOWN_MAC_ADDRESS = { (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00 };

    private static final Logger log = LoggerFactory.getLogger(NameServiceClientImpl.class);

    private final Object LOCK = new Object();

    private int nbnsIndex = 0;

        // Given
        int testType = 0x20; // Server service
        when(mockNetbiosName.getNameType()).thenReturn(testType);

        // When
        int nameType = mockNetbiosName.getNameType();

        // Then
        assertEquals(testType, nameType);
        verify(mockNetbiosName).getNameType();
    }

    @ParameterizedTest
    @ValueSource(ints = { 0x00, 0x03, 0x06, 0x1B, 0x1C, 0x1D, 0x1E, 0x20 })

        PrintStream ps = new PrintStream(baos);

        // Test with control characters and printable characters
        byte[] data = { 0x00, 0x01, 0x09, 0x0A, 0x0D, 0x1F, // Control characters
                0x20, 0x41, 0x42, 0x7E, // Printable characters
                (byte) 0x7F, (byte) 0x80, (byte) 0xFF // Extended/control
        };

        Hexdump.hexdump(ps, data, 0, data.length);
        String output = baos.toString();

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

        // Test FILE_ADDED - should invalidate cache