} else {
            this.creationBacktrace = null;
        }
    }

    /**
     * @return the fid
     * @throws SmbException
     */
    public int getFid() throws SmbException {
        if (!isValid()) {
            throw new SmbException("Descriptor is no longer valid");
        }
        return this.fid;
    }

        }

        @Test
        @DisplayName("Should throw NullPointerException with null configuration")
        void testConstructorWithNullConfig() {
            // The parent class requires a non-null configuration for getPid()
            assertThrows(NullPointerException.class, () -> {
                new Trans2GetDfsReferralResponse(null);
            });
        }
    }

    @Nested
    @DisplayName("Constants Tests")

                return resp.getOutputLength();
            }
            if (this.transact) {
                final TransTransactNamedPipe req = new TransTransactNamedPipe(th.getConfig(), fh.getFid(), buf, off, length);
                final TransTransactNamedPipeResponse resp = new TransTransactNamedPipeResponse(th.getConfig(), inB);

            return null;
        }

        @Override
        public void setResponse(CommonServerMessageBlockResponse msg) {
        }

        @Override
        public long getMid() {
            return 0;
        }

        @Override
        public void setMid(long mid) {
        }

        @Override
        public int getCommand() {
            return 0;
        }

        assertNotNull(trans2QueryPathInfo);

        // Configuration is accessed during initialization
        // Verify at least that getPid() and getTransactionBufferSize() were called
    }

            assertNotNull(cancelRequest);
            assertInstanceOf(Smb2CancelRequest.class, cancelRequest);
            Smb2CancelRequest smb2Cancel = (Smb2CancelRequest) cancelRequest;
            assertEquals(mid, smb2Cancel.getMid());
            assertEquals(asyncId, smb2Cancel.getAsyncId());
        }
    }

    @Nested
    @DisplayName("Chain Operation Tests")
    class ChainOperationTests {

        @Test

        when(tree.isSMB2()).thenReturn(false);
        when(tree.getConfig()).thenReturn(mock(Configuration.class));
        when(tree.hasCapability(SmbConstants.CAP_NT_SMBS)).thenReturn(true);
        when(handle.getFid()).thenReturn(fid);
        when(tree.send(any(CommonServerMessageBlockRequest.class), any(), any(), any())).thenReturn(resp);
    }

    // Ensures watch() fails fast if the underlying handle is invalid
    @Test

    }

    /**
     * Gets the RID (relative identifier) of this SID.
     *
     * @return the RID
     */
    public int getRid() {
        if (getType() == SID_TYPE_DOMAIN) {
            throw new IllegalArgumentException("This SID is a domain sid");
        }
        return sub_authority[sub_authority_count - 1];
    }

    /**

                } else if (dh.hasCapability(SmbConstants.CAP_NT_SMBS)) {
                    // use the open file descriptor
                    dh.send(new Trans2SetFileInformation(dh.getConfig(), dfd.getFid(), attrs, ctime, mtime, atime),
                            new Trans2SetFileInformationResponse(dh.getConfig()));
                } else {

                info = resp;
                fileSize = resp.getEndOfFile();
                this.fileLocator.updateType(resp.getFileType());
                fh = new SmbFileHandleImpl(config, resp.getFid(), h, uncPath, flags, access, attrs, options, resp.getEndOfFile());
            } else {
                final SmbComOpenAndXResponse response = new SmbComOpenAndXResponse(config);