* Test printStackTrace with cause
     */
    public void test_printStackTraceWithCause() {
        Exception cause = new IOException("IO error");
        CrawlerSystemException exception = new CrawlerSystemException("Wrapper exception", cause);

        StringWriter stringWriter = new StringWriter();
        PrintWriter printWriter = new PrintWriter(stringWriter);
        exception.printStackTrace(printWriter);

        assertNotNull(pooled2);
        assertNotSame(pooled1, pooled2); // Different PooledObject instances
        assertSame(pooled1.getObject(), pooled2.getObject()); // Same wrapped object
    }

    /**
     * Test factory reusability
     */
    public void test_factoryReusability() throws Exception {
        TestComponent.resetCounter();