}
        verifyNoInteractions(mockDir);
    }

    /**
     * Edge: passing a null directory object. Interface allows null; implementation decides.
     */
    @Test
    @DisplayName("null directory is handled by implementation")
    void handlesNullDirectory() throws Exception {
        SmbFilenameFilter filter = (dir, name) -> dir == null;

    }

    @Test
    @DisplayName("Test custom implementation with signing not enforced")
    void testCustomImplementationSigningNotEnforced() {
        // Given
        SmbNegotiationRequest request = new TestSmbNegotiationRequest(false);

        // When
        boolean result = request.isSigningEnforced();

        // Then
        assertFalse(result, "Custom implementation should return false when initialized with false");
    }

            // Test with concrete implementation - behavior depends on implementation
            // May throw NullPointerException
            try {
                concreteImplementation.append(null);
            } catch (NullPointerException e) {
                // Expected for some implementations
            }
        }
    }

    @Nested

import jcifs.internal.smb2.rdma.RdmaAccess;
import jcifs.internal.smb2.rdma.RdmaMemoryRegion;

/**
 * DiSNI memory region implementation.
 *
 * This class would integrate with DiSNI to provide registered
 * memory regions for high-performance RDMA operations.
 *
 * Note: This is a skeleton implementation. A real implementation would
 * require proper DiSNI integration with actual memory registration.
 */

        assertEquals(2, notifications.size());

        // Try to modify returned list - behavior depends on implementation
        // This tests that the implementation properly handles list modifications
        try {
            notifications.clear();
            // If this succeeds, the implementation allows modification
            assertTrue(notifications.isEmpty());
        } catch (UnsupportedOperationException e) {

# SMB3 Advanced Features Implementation Plan

## Overview
This document outlines the implementation plan for advanced SMB3 features that are currently not implemented in JCIFS. These features are essential for enterprise-grade SMB3 support, providing enhanced performance, reliability, and scalability.

## Implementation Phases

### Phase 1: SMB3 Lease Implementation (Foundation)
**Priority: HIGH** | **Estimated Effort: 3-4 weeks**

import jcifs.internal.smb2.rdma.RdmaNegotiateResponse;

/**
 * DiSNI RDMA connection implementation.
 *
 * This class would integrate with the DiSNI library to provide
 * high-performance RDMA operations over InfiniBand/RoCE networks.
 *
 * Note: This is a skeleton implementation. A real implementation would
 * require proper DiSNI integration with actual RDMA hardware.
 */

 * tests focus on the contract that implementations should honour and the
 * interaction with {@link SmbFile} instances. The tests make heavy use of
 * Mockito to guarantee that implementation classes do not inadvertently
 * bypass the filter logic.
 */
public class SmbFileFilterTest {

    /**
     * A minimal implementation that accepts every {@link SmbFile}.
     */

    }

    /**
     * Test multiple FileInformation implementations can coexist
     */
    @Test
    @DisplayName("Test multiple FileInformation implementations")
    void testMultipleFileInformationImplementations() {
        // Create different mock implementations
        FileInformation basicInfo = mock(FileInformation.class);

        // Then
        assertEquals(42, capturedFileId[0], "Anonymous implementation should work correctly");
    }

    @Test
    @DisplayName("Should verify all known implementations")
    void testAllKnownImplementations() {
        // List of all known implementations of RequestWithFileId
        Class<?>[] implementations = { Smb2CloseRequest.class, Smb2QueryInfoRequest.class, Smb2SetInfoRequest.class,