}

    /**
     * Gets the session ID associated with this encrypted message
     *
     * @return the session ID
     */
    public long getSessionId() {
        return this.sessionId;
    }

    /**
     * Sets the session ID for this encrypted message
     *
     * @param sessionId
     *            the session ID to set
     */

    }

    /**
     * Retrieves the parameters from the most recent crawling session for a given session ID.
     * Returns an empty list if no crawling information is found for the session.
     *
     * @param sessionId the session identifier to find the latest crawling parameters for
     * @return a list of CrawlingInfoParam entities from the latest session, or empty list if none found
     */

            crawler2.getCrawlerContext().setNumOfThread(numOfThread);

            final String sessionId1 = crawler1.execute();
            final String sessionId2 = crawler2.execute();

            assertNotSame(sessionId1, sessionId2);
            assertNotSame(crawler1.crawlerContext, crawler2.crawlerContext);

            // Wait for both crawlers to start with polling

        assertArrayEquals(testKey, rawKey2, "Should still match original");
    }

    @Test
    public void testRemoveSessionKey() {
        String sessionId = "test-session-3";
        keyManager.storeSessionKey(sessionId, testKey, "AES");

        assertTrue(keyManager.hasSessionKey(sessionId), "Key should exist");

        keyManager.removeSessionKey(sessionId);

        this.name = value;
    }

    public String getSessionId() {
        checkSpecifiedProperty("sessionId");
        return convertEmptyToNull(sessionId);
    }

    public void setSessionId(String value) {
        registerModifiedProperty("sessionId");
        this.sessionId = value;
    }

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();
String sessionId2 = crawler2.execute();

        final String sessionId = "id1";
        urlFilter.init(sessionId);
        assertEquals(0, urlFilter.cachedIncludeSet.size());
        assertEquals(0, urlFilter.cachedExcludeSet.size());
        assertEquals(1, dataHelper.getIncludeUrlPatternList(sessionId).size());
        assertEquals(0, dataHelper.getExcludeUrlPatternList(sessionId).size());
    }

    public void test_addInclude2() {

        crawlingInfoHelper.store(sessionId, true);

        // Verify infoMap is cleared
        assertNull(crawlingInfoHelper.infoMap);
    }

    public void test_store_existing() {
        final String sessionId = "existing-session";
        final CrawlingInfo existingInfo = new CrawlingInfo();
        existingInfo.setId("info-123");
        existingInfo.setSessionId(sessionId);

        // Mock CrawlingInfoService

        assertNull(pathMappingHelper.getPathMappingList(sessionId + "1"));
        pathMappingHelper.removePathMappingList(sessionId);
        assertNull(pathMappingHelper.getPathMappingList(sessionId));
        assertNull(pathMappingHelper.getPathMappingList(sessionId + "1"));

    }

    public void test_replaceUrl() {
        final String sessionId = "test";
        final List<PathMapping> pathMappingList = new ArrayList<PathMapping>();

        // Generate unique session ID for key management
        this.sessionId = String.format("smb-enc-%d-%d", System.currentTimeMillis(), secureRandom.nextLong());

        if (keyManager != null) {
            // Store keys securely
            String encKeyId = sessionId + "-enc";
            String decKeyId = sessionId + "-dec";