/**
     * Adds an include URL filter for the specified session.
     *
     * @param sessionId The session ID.
     * @param url The URL pattern to include.
     */
    @Override
    public void addIncludeUrlFilter(final String sessionId, final String url) {
        final OpenSearchUrlFilter esUrlFilter = new OpenSearchUrlFilter();
        esUrlFilter.setSessionId(sessionId);
        esUrlFilter.setFilterType(INCLUDE);

        public void deleteAll() {
            // Do nothing in test
        }

        @Override
        public void addIncludeUrlFilter(String sessionId, String url) {
            // Do nothing in test
        }

        @Override
        public void addIncludeUrlFilter(String sessionId, java.util.List<String> urls) {
            // Do nothing in test
        }

        @Override

    public void test_delete_multipleSessions() {
        final String sessionId1 = "session7";
        final String sessionId2 = "session8";

        urlFilterService.addIncludeUrlFilter(sessionId1, "http://example.com/.*");
        urlFilterService.addIncludeUrlFilter(sessionId2, "http://test.com/.*");

        // Verify both are stored
        assertTrue(fesenClient.prepareSearch("fess_crawler.filter")