* the {@link Writer#nullWriter()} method returns a new instance whose methods throw after the
   * instance is {@link Writer#close() closed}.
   *
   * @since 15.0
   */
  public static Writer nullWriter() {
    return NullWriter.INSTANCE;
  }

  private static final class NullWriter extends Writer {

    private static final NullWriter INSTANCE = new NullWriter();

    @Override

                assertFalse(iterator2.hasNext(), "Second instance should have no elements");
                assertFalse(iterator3.hasNext(), "Third instance should have no elements");

                assertNull(iterator1.next(), "First instance next() should return null");
                assertNull(iterator2.next(), "Second instance next() should return null");

      // Overridden to prevent a ton of boxing
      return (target instanceof Byte) && Bytes.indexOf(array, (Byte) target, start, end) != -1;
    }

    @Override
    public int indexOf(@Nullable Object target) {
      // Overridden to prevent a ton of boxing
      if (target instanceof Byte) {
        int i = Bytes.indexOf(array, (Byte) target, start, end);
        if (i >= 0) {

        assertEquals(NbtException.getErrorString(errorClass, errorCode), exception.getMessage(),
                "Exception message should match getErrorString output");
        assertTrue(exception instanceof CIFSException, "NbtException should be an instance of CIFSException");
    }

    /**
     * Test the getErrorString method with various error classes and codes to ensure all branches are covered.
     */
    @ParameterizedTest

        assertEquals(SMBProtocolDowngradeException.class.getName(), ex.toString());

        // Assert - type hierarchy: subclass of CIFSException and IOException
        assertTrue(ex instanceof jcifs.CIFSException, "Should extend CIFSException");
        assertTrue(ex instanceof IOException, "Should be an IOException (checked)");
    }

    @ParameterizedTest(name = "Message-only ctor preserves message: [{0}]")
    @MethodSource("messages")

        assertNotNull(response.getResults());
        assertEquals(2, response.getResults().length);
        assertTrue(response.getResults()[0] instanceof FileBothDirectoryInfo);
        assertTrue(response.getResults()[1] instanceof FileBothDirectoryInfo);
    }

    @Test
    @DisplayName("Test readBytesWireFormat with zero buffer length returns one empty result")

        final SpnegoToken spToken = getToken(inputBuf, offset, len);
        byte[] inputToken = null;
        if (spToken instanceof final NegTokenInit tinit) {
            final ASN1ObjectIdentifier[] rm = tinit.getMechanisms();
            this.remoteMechs = rm;
            final ASN1ObjectIdentifier prefMech = rm[0];

    }

    @Test
    public void test_extendsFromFessSystemException() {
        final LlmException exception = new LlmException("Test");
        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
    }

    @Test
    public void test_throwAndCatch() {
        boolean caught = false;
        try {
            throw new LlmException("Test exception");

            return exception instanceof UnsupportedOperationException
                || exception instanceof IllegalStateException;
          }
        };
    static final PermittedMetaException UOE =
        new PermittedMetaException("UnsupportedOperationException") {
          @Override
          boolean isPermitted(Exception exception) {
            return exception instanceof UnsupportedOperationException;
          }

        params.put("param1", "value1");
        params.put("param2", 123);

        RescorerBuilder<?> result = ltrQueryRescorer.evaluate(params);
        assertNotNull(result);
        assertTrue(result instanceof QueryRescorerBuilder);

        QueryRescorerBuilder queryRescorerBuilder = (QueryRescorerBuilder) result;
        assertEquals(testWindowSize, queryRescorerBuilder.windowSize().intValue());
    }

    @Test