}

  private fun uppercase(original: RequestBody?): RequestBody =
    object : RequestBody() {
      override fun contentType(): MediaType? = original!!.contentType()

      override fun contentLength(): Long = original!!.contentLength()

      override fun writeTo(sink: BufferedSink) {
        val uppercase = uppercase(sink)
        val bufferedSink = uppercase.buffer()
        original!!.writeTo(bufferedSink)

    @LazyInit private volatile @Nullable BaseEncoding upperCase;
    @LazyInit private volatile @Nullable BaseEncoding lowerCase;
    @LazyInit private volatile @Nullable BaseEncoding ignoreCase;

    @Override
    public BaseEncoding upperCase() {
      BaseEncoding result = upperCase;
      if (result == null) {
        Alphabet upper = alphabet.upperCase();

  /** A bit mask which selects the bit encoding ASCII character case. */
  private static final char CASE_MASK = 0x20;

  /**
   * Returns a copy of the input string in which all {@linkplain #isUpperCase(char) uppercase ASCII
   * characters} have been converted to lowercase. All other characters are copied without
   * modification.
   */
  public static String toLowerCase(String string) {
    int length = string.length();

    assertFailsToDecode(base64(), "?", "Invalid input length 1");
  }

  public void testBase64CannotUpperCase() {
    assertThrows(IllegalStateException.class, () -> base64().upperCase());
  }

  public void testBase64CannotLowerCase() {
    assertThrows(IllegalStateException.class, () -> base64().lowerCase());
  }

  public void testBase64CannotIgnoreCase() {

            assertArrayEquals(NODE, uuid.node, "node array should match");
        }

        @Test
        @DisplayName("Constructor with valid uppercase UUID string should parse correctly")
        void testConstructorWithString() {
            // Act
            UUID uuid = new UUID(VALID_UUID_STRING);

            // Assert

        notifyChange = new NtTransNotifyChange(mockConfig, fid, completionFilter, watchTree);

        String result = notifyChange.toString();

        assertNotNull(result);
        // Hexdump uses uppercase letters
        // Note: completionFilter is displayed with 4 hex chars, not 8
        assertTrue(result.contains("fid=0xFFFF"));
        assertTrue(result.contains("filter=0xFFFF")); // Only 4 hex chars are shown

        ace.sid = new SID("S-1-5-21-1234567890-123456789-123456789-1000");

        String result = ace.toString();

        assertTrue(result.startsWith("Allow "));
        // Hexdump.toHexString produces uppercase hex
        assertTrue(result.toLowerCase().contains("0x001200a9"));
        // ACE.toString() outputs "Direct    " with 4 spaces
        assertTrue(result.contains("Direct"));

    @Test
    @DisplayName("createContext: rejects NetBIOS/short host names")
    void createContext_rejectsShortNetbiosHost() {
        Kerb5Authenticator auth = new Kerb5Authenticator((Subject) null);

        // Using an uppercase short name (no dot) must throw an unsupported operation
        SmbUnsupportedOperationException ex =

        assertEquals(16384, SMBUtil.readInt2(dst, descrEnd + 2));

        // Verify serverTypes
        assertEquals(serverTypes, SMBUtil.readInt4(dst, descrEnd + 4));

        // Verify domain (should be uppercase)
        int domainStart = descrEnd + 8;
        String writtenDomain = readNullTerminatedString(dst, domainStart);
        assertEquals(domain.toUpperCase(), writtenDomain);
    }

    @Test

    }

    @Nested
    @DisplayName("Domain and Host Fixup Tests")
    class FixupTests {

        @Test
        @DisplayName("Should fixup domain for uppercase NetBIOS name")
        void testFixupDomainWithNetBIOSName() {
            // Setup with uppercase server name
            setupReferralWithServer("SERVER");

            referralData.fixupDomain("example.com");