if (dataLen < 0 || dataLen > 1024) { // 1KB max per context
                    throw new SMBProtocolDecodingException(
                            "Invalid negotiate context data length: " + dataLen + " at position " + i + " (must be 0-1024)");
                }

                ncpos += 4;
                ncpos += 4; // Reserved

import jcifs.Decodable;

/**
 * SMB2 Negotiate Context response data structure.
 *
 * This class represents negotiate contexts returned by the server
 * in response to negotiate context requests.
 *
 * @author mbechler
 */
public interface NegotiateContextResponse extends Decodable {

    /**
     * Gets the negotiate context type.
     *
     * @return the SMB2 negotiate context type
     */
    int getContextType();

- [ ] Implement lease key generation and management
- [ ] Add lease context to Create request/response
- [ ] Implement lease break notification handling
- [ ] Modify SmbFile to support lease-based caching
- [ ] Add lease upgrade/downgrade logic
- [ ] Implement lease epoch tracking for v2 leases

#### 1.3 Integration Points
- Modify `Smb2CreateRequest` to include lease contexts
- Update `SmbFile` caching logic to use leases

import jcifs.Encodable;

/**
 * SMB2 Negotiate Context request data structure.
 *
 * This class represents negotiate contexts used in SMB 3.1.1
 * for capability negotiation and security enhancements.
 *
 * @author mbechler
 */
public interface NegotiateContextRequest extends Encodable {

    /**
     * Gets the negotiate context type.
     *
     * @return the SMB2 negotiate context type
     */
    int getContextType();

        i += 4;

        assert i == body.length;
        return body;
    }

    /**
     * Build a CREATE response body with a single, unrecognized create context.
     * The parser should iterate it but produce an empty contexts array.
     */
    private static byte[] buildCreateBodyWithContext(byte[] fileId, int contextStartOffsetFromHeader) {
        // Base body part size (up to and including CreateContextsLength)

            // Arrange
            NegotiateContextResponse[] contexts =
                    new NegotiateContextResponse[] { new PreauthIntegrityNegotiateContext(), new EncryptionNegotiateContext() };

            // Act & Assert
            for (NegotiateContextResponse context : contexts) {
                assertNotNull(context);
                assertTrue(context.getContextType() > 0);
            }
        }
    }

        // Negotiate context offset (0 for non-3.1.1)
        SMBUtil.writeInt4(0, buffer, 60);

        return buffer;
    }

    /**
     * Creates a larger buffer suitable for testing negotiate contexts.
     */
    private byte[] createLargeBufferForContexts() {
        byte[] buffer = new byte[1024]; // Large enough for contexts

        // Copy basic structure

            context = SingletonContext.getInstance().withCredentials(auth);
        } catch (Exception e) {
            log.warn("Failed to create authenticated context, trying guest access", e);
            context = SingletonContext.getInstance();
        }

            assertNull(context.getCiphers());
        }

        @Test
        @DisplayName("Should create instance with empty ciphers array")
        void testConstructorWithEmptyCiphers() {
            int[] ciphers = {};

            EncryptionNegotiateContext context = new EncryptionNegotiateContext(mockConfig, ciphers);

            assertNotNull(context);
            assertArrayEquals(ciphers, context.getCiphers());

	if err := d.calcError(); err != nil {
		return err
	}
	return d.disk.DeleteVol(ctx, volume, forceDelete)
}

func (d *naughtyDisk) WalkDir(ctx context.Context, opts WalkDirOptions, wr io.Writer) error {
	if err := d.calcError(); err != nil {
		return err
	}
	return d.disk.WalkDir(ctx, opts, wr)
}