assertArrayEquals(original, buffer, "Buffer must remain unchanged");
        }

        @Test
        @DisplayName("Handles null destination without throwing and returns 0")
        void allowsNullBuffer() {
            // Arrange
            Smb2LogoffResponse resp = newResponse();

            // Act & Assert
            assertEquals(0, resp.writeBytesWireFormat(null, 0), "Should return 0 even with null buffer");