contentLength != -1L -> newKnownLengthSink() // Stream a request body of a known length.
      else -> // Stream a request body of a known length.
        throw IllegalStateException(
          "Cannot stream a request body without chunked encoding or a known content length!",
        )
    }

  override fun cancel() {
    carrier.cancel()
  }

  /**

        }
    }

    @Test
    void causeConstructor_setsCause_andDerivesMessageFromCauseToString() {
        // Arrange - use a real cause so message is derived from cause.toString()
        Throwable cause = new IllegalStateException("proto mismatch");
        String expectedMessage = cause.toString();

        // Act
        SMBProtocolDowngradeException ex = new SMBProtocolDowngradeException(cause);

    Lock lockA = factory.newReentrantLock(OtherOrder.FIRST);
    Lock lockB = factory.newReentrantReadWriteLock(OtherOrder.FIRST).readLock();

    lockA.lock();
    assertThrows(IllegalStateException.class, () -> lockB.lock());

    lockA.unlock();
    lockB.lock();
  }

  public void testReadLock_deadlock() {
    readLockA.lock(); // Establish an ordering from readLockA -> lockB.

    Lock lockA = factory.newReentrantLock(OtherOrder.FIRST);
    Lock lockB = factory.newReentrantReadWriteLock(OtherOrder.FIRST).readLock();

    lockA.lock();
    assertThrows(IllegalStateException.class, () -> lockB.lock());

    lockA.unlock();
    lockB.lock();
  }

  public void testReadLock_deadlock() {
    readLockA.lock(); // Establish an ordering from readLockA -> lockB.

        assertNull(exception.getCause());
    }

    public void test_constructor_withNestedCause() {
        // Test constructor with nested exception causes
        Exception rootCause = new IllegalStateException("Root cause");
        Exception middleCause = new RuntimeException("Middle cause", rootCause);
        String message = "Top level dictionary error";

        // Note: isTarget requires FessConfig which needs container
        // We can only verify the method handles missing container gracefully
        try {
            generator.isTarget(docMap);
        } catch (IllegalStateException e) {
            // Expected when container is not initialized
            assertTrue(e.getMessage().contains("Not initialized"));
        }
    }

    public void test_addCondition() {

    sizesToTest.retainAll(asList(CollectionSize.ZERO, CollectionSize.ONE, CollectionSize.SEVERAL));

    logger.fine("   Sizes: " + formatFeatureSet(sizesToTest));

    if (sizesToTest.isEmpty()) {
      throw new IllegalStateException(
          name
              + ": no CollectionSizes specified (check the argument to "
              + "FeatureSpecificTestSuiteBuilder.withFeatures().)");
    }

    TestSuite suite = new TestSuite(name);

    // System.setProperty("jdk.tls.client.enableSessionTicketExtension", "true")
    // System.setProperty("jdk.tls.server.enableSessionTicketExtension", "true")

    // IllegalStateException: Cannot resume session and session creation is disabled
    platform.assumeNotBouncyCastle()
  }

  @ParameterizedTest(name = "{displayName}({arguments})")
  @ValueSource(strings = ["TLSv1.2", "TLSv1.3"])
  @Flaky

     * It is an error to call this multiple times on the same instance.
     *
     * @throws IllegalStateException if this request doesn't have a request body, or if it already
     *     has a 'Content-Encoding' header.
     */
    fun gzip() =
      apply {
        val identityBody =
          body
            ?: throw IllegalStateException("cannot gzip a request that has no body")

    }

    /**
     * Test constructor with null message and valid cause
     */
    public void test_constructor_withNullMessageAndValidCause() {
        Exception cause = new IllegalStateException("State error");
        CrawlerSystemException exception = new CrawlerSystemException(null, cause);

        assertNotNull(exception);
        assertNull(exception.getMessage());