int bytesWritten = packet.writeTrailerWireFormat(dst, offset);

        assertTrue(bytesWritten > 0);
        // Check that bytes before offset are unchanged
        for (int i = 0; i < offset; i++) {
            assertEquals((byte) 0xFF, dst[i]);
        }
        // Check that bytes after offset are written
        assertNotEquals((byte) 0xFF, dst[offset]);
    }

    @Test

     */
    public LockingAndXRange(final boolean largeFile) {
        this.largeFile = largeFile;
    }

    /**
     * Returns the process ID associated with this lock range.
     *
     * @return the process ID
     */
    public int getPid() {
        return this.pid;
    }

    /**
     * Returns the starting byte offset of the lock range.
     *

        buffer.putShort((short) 0x8004); // Control flags (SE_DACL_PRESENT | SE_SELF_RELATIVE)
        buffer.putInt(20); // Owner offset
        buffer.putInt(40); // Group offset
        buffer.putInt(0); // SACL offset (null)
        buffer.putInt(60); // DACL offset

        // Owner SID at offset 20
        buffer.position(20);
        buffer.put((byte) 0x01); // Revision
        buffer.put((byte) 0x01); // SubAuthorityCount

        @DisplayName("Should handle various buffer offsets")
        void testVariousBufferOffsets(int offset) {
            byte[] largeBuffer = new byte[512];
            int result = testRequest.encode(largeBuffer, offset);

            assertTrue(result > 0);
            // Verify header at correct offset
            for (int i = offset; i < offset + 8; i++) {
                assertEquals((byte) 0xFF, largeBuffer[i]);

        // No group (offset 0)
        for (int i = 8; i < 12; i++)
            securityDescriptorBytes[i] = 0;
        // No SACL (offset 0)
        for (int i = 12; i < 16; i++)
            securityDescriptorBytes[i] = 0;
        // DACL at offset 20
        securityDescriptorBytes[16] = 20;
        securityDescriptorBytes[17] = 0;
        securityDescriptorBytes[18] = 0;
        securityDescriptorBytes[19] = 0;

        byte[] dst = new byte[100];

        int bytesWritten = notifyChange.writeSetupWireFormat(dst, 10);

        // Verify structure:
        // Offset 0-3: Completion Filter (4 bytes)
        // Offset 4-5: FID (2 bytes)
        // Offset 6: Watch Tree (1 byte)
        // Offset 7: Reserved (1 byte)
        assertEquals(8, bytesWritten);

        // Check completion filter

        byte[] buffer = new byte[256];
        int offset = 10;

        // When
        int bytesWritten = request.writeBytesWireFormat(buffer, offset);

        // Then
        assertEquals(4, bytesWritten);

        // Verify structure size (4) is written at offset
        assertEquals(4, SMBUtil.readInt2(buffer, offset));

        // Verify reserved field (0) is written at offset + 2

        assertEquals(0, result);
    }

    @Test
    @DisplayName("Test boundary conditions for buffer offsets")
    void testBoundaryConditions() {
        byte[] smallBuffer = new byte[10];

        // Test with maximum offset
        int result = response.writeSetupWireFormat(smallBuffer, Integer.MAX_VALUE);
        assertEquals(0, result);

        }

        @ParameterizedTest
        @DisplayName("Should handle various offsets")
        @ValueSource(longs = { 0L, 1L, 512L, 1024L, 4096L, 1048576L, Long.MAX_VALUE })
        void testVariousOffsets(long offset) {
            assertDoesNotThrow(() -> request.setOffset(offset));
        }
    }

    @Nested
    @DisplayName("Size Calculation Tests")
    class SizeCalculationTests {

        @DisplayName("Should read response at various buffer offsets")
        @ValueSource(ints = { 0, 10, 100, 500 })
        void testReadAtDifferentOffsets(int offset) throws SMBProtocolDecodingException {
            byte[] buffer = new byte[1024];
            byte[] responseData = createValidWriteResponse(2048, 1024);
            System.arraycopy(responseData, 0, buffer, offset, responseData.length);