target.close();
        verify(fileHandle, atLeastOnce()).release();
    }

    @Test
    @DisplayName("getSessionKey fetches via tree->session and returns bytes")
    void testGetSessionKey() throws CIFSException {
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);
        SmbSessionImpl session = mock(SmbSessionImpl.class);

            assertEquals("testServerDfs", handle.getServerWithDfs());
        }

        @Test
        @DisplayName("Should return session key successfully")
        void testGetSessionKey() throws Exception {
            DcerpcPipeHandle handle = createMockedDcerpcPipeHandle();
            byte[] expectedKey = "sessionKey".getBytes();

        verify(transport, times(1)).acquire();
        assertTrue(session.isInUse());
    }

    @Test
    @DisplayName("getSessionKey: throws when absent, returns when present")
    void testGetSessionKey() throws Exception {
        SmbSessionImpl session = newSession();

        // Absent key -> CIFSException
        CIFSException noKey = assertThrows(CIFSException.class, session::getSessionKey);