`Pray don't trouble yourself to say it any longer than that,'
said Alice.

  `Oh, don't talk about trouble!' said the Duchess.  `I make you
a present of everything I've said as yet.'

  `A cheap sort of present!' thought Alice.  `I'm glad they don't
give birthday presents like that!'  But she did not venture to
say it out loud.

  `Thinking again?' the Duchess asked, with another dig of her
sharp little chin.

    return new Present<>(
        checkNotNull(
            function.apply(reference),
            "the Function passed to Optional.transform() must not return null."));
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    if (obj instanceof Present) {
      Present<?> other = (Present<?>) obj;
      return reference.equals(other.reference);
    }

</p>

<pre>
uint(-1)     // -1 cannot be represented as a uint
int(3.14)    // 3.14 cannot be represented as an int
int64(Huge)  // 1267650600228229401496703205376 cannot be represented as an int64
Four * 300   // operand 300 cannot be represented as an int8 (type of Four)
Four * 100   // product 400 cannot be represented as an int8 (type of Four)
</pre>

<p>

        String message = "Serialization test";
        UnsupportedSearchException exception = new UnsupportedSearchException(message);

        // Verify basic properties are preserved
        assertEquals(message, exception.getMessage());

        // The presence of serialVersionUID is verified at compile time
        // and the exception extends RuntimeException which is Serializable
        assertTrue(exception instanceof java.io.Serializable);

    * In requests and responses will be represented as a `str`.
* `datetime.datetime`:
    * A Python `datetime.datetime`.
    * In requests and responses will be represented as a `str` in ISO 8601 format, like: `2008-09-15T15:53:00+05:00`.
* `datetime.date`:
    * Python `datetime.date`.
    * In requests and responses will be represented as a `str` in ISO 8601 format, like: `2008-09-15`.
* `datetime.time`:

        assertNull(block.andx, "andx should be cleared when not chaining");
    }

    @Test
    @DisplayName("writeAndXWireFormat with andx but batching prevented by limit")
    void testWriteAndXWireFormatBatchingPrevented() {
        DummyPlainSMB next = new DummyPlainSMB();
        DummyAndXBlock block = new DummyAndXBlock(next);

        // Then
        assertEquals(CRYPTO_ERROR_MESSAGE, exception.getMessage(), "Crypto message should be preserved");
        assertSame(cause, exception.getCause(), "Crypto cause should be preserved");
    }

        assertThrows(IOException.class, () -> new NegTokenTarg(bad), "Malformed byte[] should cause IOException");
    }

    @Test
    @DisplayName("mechanism token empty array – preserved after round‑trip")
    void testEmptyMechanismToken() throws IOException {
        NegTokenTarg nt = new NegTokenTarg();
        nt.setResult(NegTokenTarg.REQUEST_MIC);

        SMBProtocolDowngradeException ex = new SMBProtocolDowngradeException(message);

        // Assert - message preserved, cause null
        assertEquals(message, ex.getMessage());
        assertNull(ex.getCause());

        // Assert - toString starts with class name and contains message when present
        if (message == null) {
            assertEquals(SMBProtocolDowngradeException.class.getName(), ex.toString());

     */
    boolean problemsOverflow();

    /**
     * Reports a problem: always maintains the counters, but whether problem is preserved in memory, depends on
     * implementation and its configuration.
     *
     * @param problem the problem to report
     * @return {@code true} if passed problem is preserved by this call.
     */