}

    @Nested
    @DisplayName("Special Value Constants")
    class SpecialValueConstants {

        @Test
        @DisplayName("Unspecified FileId should be 16 bytes of 0xFF")
        void testUnspecifiedFileId() {
            assertNotNull(Smb2Constants.UNSPECIFIED_FILEID, "Unspecified FileId should not be null");
            assertEquals(16, Smb2Constants.UNSPECIFIED_FILEID.length, "Unspecified FileId must be exactly 16 bytes");

            assertDoesNotThrow(() -> request.setFileId(longFileId));
        }

        @Test
        @DisplayName("Should handle unspecified file ID")
        void testUnspecifiedFileId() {
            assertDoesNotThrow(() -> request.setFileId(Smb2Constants.UNSPECIFIED_FILEID));
        }
    }

    @Nested
    @DisplayName("Data Setting Tests")
    class DataSettingTests {