super(config, andx);
    }

    /**
     * Returns the native LAN Manager string reported by the server.
     *
     * @return the nativeLanMan
     */
    public final String getNativeLanMan() {
        return this.nativeLanMan;
    }

    /**
     * Returns the native operating system string reported by the server.
     *
     * @return the nativeOs
     */

            dstIndex += writeString(this.primaryDomain, dst, dstIndex);
        }
        dstIndex += writeString(getConfig().getNativeOs(), dst, dstIndex);
        dstIndex += writeString(getConfig().getNativeLanman(), dst, dstIndex);

        return dstIndex - start;
    }

    @Override
    protected int readParameterWordsWireFormat(final byte[] buffer, final int bufferIndex) {
        return 0;
    }

            mockConfig.isUseUnicode();
            mockConfig.isForceUnicode();
            mockConfig.isUseBatching();
            mockConfig.getNativeOs();
            mockConfig.getNativeLanman();
            mockConfig.getReceiveBufferSize();
            mockConfig.getSendBufferSize();
            mockConfig.getSoTimeout();
            mockConfig.getConnTimeout();
            mockConfig.getSessionTimeout();

        return this.delegate.getNativeOs();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Configuration#getNativeLanman()
     */
    @Override
    public String getNativeLanman() {
        return this.delegate.getNativeLanman();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Configuration#getMaximumBufferSize()
     */
    @Override

        when(mockDelegate.getDefaultUsername()).thenReturn("testuser");
        when(mockDelegate.getDefaultPassword()).thenReturn("testpass");
        when(mockDelegate.getNativeLanman()).thenReturn("jCIFS");

        // When
        String oemEncoding = delegatingConfig.getOemEncoding();
        String netbiosHostname = delegatingConfig.getNetbiosHostname();

        setupNegotiateStubs();
        when(mockConfig.getVcNumber()).thenReturn(0);
        when(mockConfig.getNativeOs()).thenReturn("Test OS");
        when(mockConfig.getNativeLanman()).thenReturn("Test LAN");

        byte[] blob = blobCred();
        SmbComSessionSetupAndX obj = new SmbComSessionSetupAndX(mockContext, mockNegotiate, mockAndX, blob);
        byte[] buf = new byte[256];

        CIFSContext context = SingletonContext.getInstance();
        assertNotNull(context);
        assertEquals("CustomOS", context.getConfig().getNativeOs());
        assertEquals("CustomLanman", context.getConfig().getNativeLanman());
    }

    @Test
    void testInitAlreadyInitializedThrowsException() throws CIFSException {
        // Test attempting to initialize when already initialized
        SingletonContext.init(null);

    }

    @Test
    @DisplayName("Test SMB configuration getters")
    void testSmbConfigurationGetters() {
        assertEquals("jCIFS", config.getNativeLanman());
        assertNull(config.getNativeOs());
        assertEquals(1, config.getVcNumber());
        assertEquals(0, config.getCapabilities());
        assertNull(config.getMinimumVersion());

    String getNativeOs();

    /**
     *
     * Property {@code jcifs.smb.client.nativeLanMan} (string, default {@code jCIFS})
     *
     * @return Lanman string to report
     */
    String getNativeLanman();

    /**
     *
     * Property {@code jcifs.smb.client.rcv_buf_size} (int, default 65535)
     *
     * @return receive buffer size, in bytes
     * @deprecated use getReceiveBufferSize instead

        return this.smbNotifyBufferSize;
    }

    @Override
    public int getMaxMpxCount() {
        return this.maxMpxCount;
    }

    @Override
    public String getNativeLanman() {
        return this.nativeLanMan;
    }

    @Override
    public String getNativeOs() {
        return this.nativeOs;
    }

    @Override
    public int getVcNumber() {