// Mock credentials to avoid NullPointerException
        when(ctx.getCredentials()).thenReturn(credentials);
        when(credentials.getUserDomain()).thenReturn("DOMAIN");
        // Mock DFS resolver
        when(ctx.getDfs()).thenReturn(dfsResolver);
    }

    // Helper to set private field 'tree'
    private static void setTree(SmbTreeConnection c, SmbTreeImpl tree) {
        try {

        buffer[6] = 0;
        buffer[7] = 0;

        return buffer;
    }

    private byte[] createDfsReferralBufferWithMultipleReferrals(int numReferrals) {
        // Each referral structure needs 20 bytes, plus string data
        int referralSize = 20;
        int referralsDataSize = numReferrals * referralSize;

        // Add space for string data for each referral
        String testPath = "\\server\\share";

        // 3. Sending the request through the appropriate transport
        // 4. Processing the response

        // For now, we'll return false to indicate that the concrete implementation
        // needs to be provided by the calling code
        log.warn("performReconnection called but no concrete implementation available. "
                + "This method should be overridden by the actual SMB implementation.");

     *
     * @return true if expired
     */
    public boolean isExpired() {
        return System.currentTimeMillis() - lastUpdateTime > maxAge;
    }

    /**
     * Check if cache needs refresh
     *
     * @return true if refresh needed
     */
    public boolean needsRefresh() {
        return isExpired() || hasChanges;
    }

    /**

            String uuidWithExtra = VALID_UUID_STRING + "EXTRA";

            // Act
            UUID uuid = new UUID(uuidWithExtra);

            // Assert - The implementation only reads what it needs
            assertEquals(TIME_LOW, uuid.time_low);
            assertEquals(TIME_MID, uuid.time_mid);
            assertEquals(TIME_HI_AND_VERSION, uuid.time_hi_and_version);

        final byte[] e8 = new byte[8];

        for (int i = 0; i < key.length / 7; i++) {
            System.arraycopy(key, i * 7, key7, 0, 7);
            final Cipher des = Crypto.getDES(key7);
            des.update(data, 0, data.length, e8);
            System.arraycopy(e8, 0, e, i * 8, 8);
        }
    }

                        }

                        // FSCTL_SRV_COPYCHUNK_WRITE allows to open the file for writing only, FSCTL_SRV_COPYCHUNK also
                        // needs read access
                        final Smb2IoctlRequest copy = new Smb2IoctlRequest(sh.getConfig(),

        TreeConnectResponse response = null;
        try (SmbSessionImpl sess = getSession(); SmbTransportImpl transport = sess.getTransport()) {
            synchronized (transport) {

                // this needs to be done before the reference to the remote hostname later
                transport.ensureConnected();

                if (waitForState(transport) == 2) {
                    // already connected

 *
 * We strongly suggest that you create an explicit {@link jcifs.context.CIFSContextWrapper}
 * with your desired config. It's base implementation {@link jcifs.context.BaseContext}
 * should be sufficient for most needs.
 *
 * If you want to retain the classic singleton behavior you can use
 * {@link jcifs.context.SingletonContext#getInstance()}
 * witch is initialized using system properties.
 *
 */
public class Config {

    class EdgeCasesAndRealWorldTests {

        @Test
        @DisplayName("Should handle typical Windows NTFS configuration")
        void shouldHandleTypicalNTFSConfiguration() throws SMBProtocolDecodingException {
            // Given - typical NTFS: 4KB clusters (8 sectors * 512 bytes)
            long totalClusters = 26214400L; // 100GB / 4KB
            long freeClusters = 13107200L; // 50GB / 4KB