queue.clear();
    }

    /**
     * Sets the scroll size.
     * @param scrollSize The scroll size.
     */
    public void setScrollSize(final int scrollSize) {
        this.scrollSize = scrollSize;
    }

    /**
     * Sets the limit of document size.
     * @param limitOfDocumentSize The limit of document size.
     */
    public void setLimitOfDocumentSize(final long limitOfDocumentSize) {

    }

    /**
     * Sets the maximum uncompression size.
     * @param maxUncompressionSize The max uncompression size.
     */
    public void setMaxUncompressionSize(final long maxUncompressionSize) {
        this.maxUncompressionSize = maxUncompressionSize;
    }

    /**
     * Sets the initial buffer size.
     * @param initialBufferSize The initial buffer size.
     */

            } else {
                logger.info("{} is not available.", componentName);
            }
        }
    }

    /**
     * Sets the maximum client factory size.
     * @param maxClientFactorySize The maximum size.
     */
    public void setMaxClientFactorySize(final int maxClientFactorySize) {
        if (maxClientFactorySize <= 0) {

            }
        }

        return new ExtractData(buf.toString().trim());
    }

    /**
     * Sets the maximum content size.
     * @param maxContentSize The maximum content size to set.
     */
    public void setMaxContentSize(final long maxContentSize) {
        this.maxContentSize = maxContentSize;
    }

        assertEquals(0, urlFilter.cachedExcludeSet.size());
        assertEquals(1, dataHelper.getIncludeUrlPatternList(sessionId).size());
        assertEquals(0, dataHelper.getExcludeUrlPatternList(sessionId).size());
    }

    public void test_addInclude2() {
        assertEquals(0, urlFilter.cachedIncludeSet.size());
        assertEquals(0, urlFilter.cachedExcludeSet.size());

        } finally {
            CloseableUtil.closeQuietly(ais);
        }

        return buf.toString().trim();
    }

    /**
     * Sets the maximum content size.
     * @param maxContentSize The maximum content size to set.
     */
    public void setMaxContentSize(final long maxContentSize) {
        this.maxContentSize = maxContentSize;
    }

```java
// Create multiple crawler instances
Crawler crawler1 = container.getComponent("crawler");
crawler1.setSessionId("session1");
crawler1.addUrl("https://site1.com");

Crawler crawler2 = container.getComponent("crawler");  
crawler2.setSessionId("session2");
crawler2.addUrl("https://site2.com");

// Execute concurrently
crawler1.setBackground(true);
crawler2.setBackground(true);

String sessionId1 = crawler1.execute();

        assertTrue(exceptions.isEmpty());
        assertEquals(threadCount * objectsPerThread, createdComponents.size());

        // Check all components are unique (for prototype)
        for (int i = 0; i < createdComponents.size(); i++) {
            for (int j = i + 1; j < createdComponents.size(); j++) {
                assertNotSame(createdComponents.get(i), createdComponents.get(j));
            }
        }
    }

    public void test_include_processUrl() {
        assertEquals(0, includeFilter.cachedIncludeSet.size());
        assertEquals(0, includeFilter.cachedExcludeSet.size());

        includeFilter.processUrl("http://example.com/");

        assertEquals(1, includeFilter.cachedIncludeSet.size());
        assertEquals(0, includeFilter.cachedExcludeSet.size());
        assertEquals("http://example.com/.*", includeFilter.cachedIncludeSet.toArray()[0]);

    }

    /**
     * Returns the preload size for charset detection.
     * @return The preload size for charset detection.
     */
    public int getPreloadSizeForCharset() {
        return preloadSizeForCharset;
    }

    /**
     * Sets the preload size for charset detection.
     * @param preloadSizeForCharset The preload size for charset detection to set.
     */