### Multi-Instance Crawling

```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);

        assertNull(crawlerContext.getSessionId());

        crawlerContext.setSessionId("test-session-001");
        assertEquals("test-session-001", crawlerContext.getSessionId());

        crawlerContext.setSessionId(null);
        assertNull(crawlerContext.getSessionId());

        crawlerContext.setSessionId("");
        assertEquals("", crawlerContext.getSessionId());

        return this.sessionId;
    }

    /**
     * Sets the session ID for this encrypted message
     *
     * @param sessionId
     *            the session ID to set
     */
    public void setSessionId(final long sessionId) {
        this.sessionId = sessionId;
    }

    @Override
    public int size() {
        return TRANSFORM_HEADER_SIZE;
    }

    @Override

            file.deleteOnExit();
            fileTransformer.setPath(file.getAbsolutePath());

            final Crawler crawler1 = crawlerContainer.getComponent("crawler");
            crawler1.setSessionId(crawler1.getSessionId() + "1");
            crawler1.setBackground(true);
            ((UrlFilterImpl) crawler1.urlFilter).setIncludeFilteringPattern("$1$2$3.*");
            crawler1.addUrl(url1);

            file.mkdirs();
            file.deleteOnExit();
            fileTransformer.setPath(file.getAbsolutePath());

            final Crawler crawler1 = container.getComponent("crawler");
            crawler1.setSessionId(crawler1.getSessionId() + "1");
            crawler1.setBackground(true);
            ((UrlFilterImpl) crawler1.urlFilter).setIncludeFilteringPattern("$1$2$3.*");
            crawler1.addUrl(url1);

                         */
                        tcax.setPath("\\\\" + this.netbiosName + "\\IPC$");
                    }
                }

                request.setSessionId(this.sessionId);
                request.setUid(this.uid);

                if (request.getDigest() == null) {
                    request.setDigest(getDigest());
                }

    }

    /**
     * @param sessionId
     *            the sessionId to set
     */
    @Override
    public final void setSessionId(final long sessionId) {
        this.sessionId = sessionId;
        if (this.next != null) {
            this.next.setSessionId(sessionId);
        }
    }

    /**
     * {@inheritDoc}
     *

                bindingHash // Security buffer contains the binding information
        );

        // Set the session ID of the existing session
        request.setSessionId(getSessionId());

        // CRITICAL: Set the binding flag per MS-SMB2
        request.setSessionBinding(true);

        // The actual transport send would need proper integration

        }

        @Override
        public void setStatus(Integer status) {
            // Do nothing in test
        }

        @Override
        public void setSessionId(String sessionId) {
            // Do nothing in test
        }

        @Override
        public void setRuleId(String ruleId) {
            // Do nothing in test
        }