*
     * @return a child context using the configured default credentials
     */
    CIFSContext withDefaultCredentials();

    /**
     * Create a child context with anonymous credentials
     *
     * @return a child context using anonymous credentials
     */
    CIFSContext withAnonymousCredentials();

    /**
     * Create a child context with guest credentials
     *

    /**
     * {@inheritDoc}
     *
     * @see jcifs.CIFSContext#withDefaultCredentials()
     */
    @Override
    public CIFSContext withDefaultCredentials() {
        return withCredentials(getDefaultCredentials());
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.CIFSContext#withGuestCrendentials()
     */
    @Override
    public CIFSContext withGuestCrendentials() {

import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.util.SMBUtil;

@ExtendWith(MockitoExtension.class)
class Smb2LogoffRequestTest {

    @Mock
    Configuration configuration;

    @Mock
    CIFSContext cifsContext;

    // Helper to create a fresh request under test

    }

    @Test
    @DisplayName("resolveSids(CIFSContext,server,sids,offset,length) throws on invalid inputs")
    void resolveSids_invalidInputs() throws Exception {
        SIDCacheImpl cache = new SIDCacheImpl(mock(CIFSContext.class));
        CIFSContext ctx = mock(CIFSContext.class);

        // Null sids array -> NPE

    /** The CIFS context for this authentication */
    private CIFSContext context;

    /**
     *
     */
    private NtlmPasswordAuthentication() {
    }

    /**
     * Construct anonymous credentials
     *
     * @param tc the CIFS context to use
     */
    public NtlmPasswordAuthentication(final CIFSContext tc) {
        this(tc, "", "", "");
    }

    /**

        // Verify source exists
        CIFSContext verifyContext = createFreshContext();
        SmbFile verifySource = new SmbFile(baseUrl + "shared/" + sourceFileName, verifyContext);
        assertTrue(verifySource.exists(), "Source file should exist");

        // Perform rename using copy+delete as this is more reliable with Docker/Samba
        CIFSContext renameContext = createFreshContext();

            CIFSContext mockContext = mock(CIFSContext.class);
            when(mockSession.getContext()).thenReturn(mockContext);

            CIFSContext result1 = mockSession.getContext();
            CIFSContext result2 = mockSession.getContext();

            assertSame(result1, result2, "getContext() should return consistent values");
            verify(mockSession, times(2)).getContext();

            transportContextField.set(ntlmServlet, cifsContext);
        } catch (Exception e) {
            throw new RuntimeException("Failed to inject mock CIFSContext", e);
        }

        when(cifsContext.getTransportPool()).thenReturn(transportPool);
        when(cifsContext.getNameServiceClient()).thenReturn(nameServiceClient);
        lenient().when(cifsContext.getConfig()).thenReturn(configuration);

                .resolveSids(any(CIFSContext.class), eq(null), any(SID[].class));

        assertThrows(CIFSException.class, () -> sidResolver.resolveSids(mockContext, null, testSids));
    }

    @Test
    void testResolveSids_WithNullSidsArray() throws CIFSException {
        doThrow(new CIFSException("SIDs array cannot be null")).when(sidResolver)
                .resolveSids(any(CIFSContext.class), anyString(), eq(null));

        // Test getInstance returns the existing instance
        SingletonContext.init(null);
        CIFSContext firstInstance = SingletonContext.getInstance();
        CIFSContext secondInstance = SingletonContext.getInstance();
        assertSame(firstInstance, secondInstance);
    }

    @Test
    void testRegisterSmbURLHandlerWhenPkgsIsNull() {