byte[] buffer1 = new byte[100];
            byte[] buffer2 = new byte[200];

            Arrays.fill(buffer1, (byte) 0x11);
            Arrays.fill(buffer2, (byte) 0x22);

            // First decode
            response.decode(buffer1, 0, 50);
            byte[] data1 = response.getData();

            // Second decode should overwrite
            response.decode(buffer2, 10, 60);

        @Test
        @DisplayName("Should not modify buffer during write")
        void testWriteDoesNotModifyBuffer() {
            byte[] buffer = new byte[64];
            Arrays.fill(buffer, (byte) 0xAA);
            byte[] originalBuffer = buffer.clone();

            notification.writeBytesWireFormat(buffer, 0);

            assertArrayEquals(originalBuffer, buffer);
        }
    }

    @Nested

                final int _bufferl = length / 2;
                final int _buffers = maximum_length / 2;
                _dst.enc_ndr_long(_buffers);
                _dst.enc_ndr_long(0);
                _dst.enc_ndr_long(_bufferl);
                final int _bufferi = _dst.index;
                _dst.advance(2 * _bufferl);

                _dst = _dst.derive(_bufferi);
                for (int _i = 0; _i < _bufferl; _i++) {

                        throw new NdrException(NdrException.INVALID_CONFORMANCE);
                    }
                    this.buffer = new short[_buffers];
                }
                _src = _src.derive(_bufferi);
                for (int _i = 0; _i < _bufferl; _i++) {
                    this.buffer[_i] = (short) _src.dec_ndr_short();
                }
            }
        }
    }

        assertThrows(Exception.class, () -> new Pac(pacData, keys));
    }

    @Test
    void testZeroBufferCount() throws IOException {
        // Test PAC with zero buffers (missing required buffers)
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        writeLittleEndianInt(baos, 0); // bufferCount = 0
        writeLittleEndianInt(baos, PacConstants.PAC_VERSION); // valid version

     */
    public BufferCacheImpl(final Configuration cfg) {
        this(cfg.getBufferCacheSize(), cfg.getMaximumBufferSize());
    }

    /**
     * Constructs a buffer cache with specified parameters.
     *
     * @param maxBuffers the maximum number of buffers to cache
     * @param maxSize the size of each buffer in bytes
     *
     */
    public BufferCacheImpl(final int maxBuffers, final int maxSize) {

        );
        when(mockNdrBuffer.dec_ndr_small()).thenReturn(4, 5);
        when(mockDeferredNdrBuffer.dec_ndr_long()).thenReturn(5, 0, 5, // name buffer: buffers, 0, bufferl
                6, 0, 6, // dns_domain buffer: buffers, 0, bufferl
                7, 0, 7 // dns_forest buffer: buffers, 0, bufferl
        );
        when(mockDeferredNdrBuffer.dec_ndr_short()).thenReturn((int) (short) 'a', (int) (int) (short) 'b', (int) (int) (short) 'c',

        
        // Pre-allocate buffer pool
        initializeBufferPool();
    }
    
    private void initializeBufferPool() {
        // Allocate send buffers
        for (int i = 0; i < initialSendBuffers; i++) {
            try {
                ByteBuffer buffer = ByteBuffer.allocateDirect(sendBufferSize);
                RdmaMemoryRegion region = provider.registerMemory(buffer,

     *
     * @param buffer buffer to release
     */
    public void releaseBuffer(ByteBuffer buffer) {
        // For direct buffers, we rely on GC
        // Could implement a more sophisticated buffer pool here
    }

    /**
     * Clean up all pooled regions
     *
     * This method should be called when shutting down to
     * release all resources.
     */

        assertSame(testResponseBuffer, negotiationWithNullResponse.getResponseRaw());
    }

    @Test
    @DisplayName("Constructor with null buffers should work")
    void testConstructorWithNullBuffers() {
        // Test that null buffers are handled properly
        SmbNegotiation negotiationWithNullBuffers = new SmbNegotiation(mockRequest, mockResponse, null, null);