return this;
    }

    /**
     * Gets the fragment size.
     *
     * @return the fragment size in characters
     */
    public int getFragmentSize() {
        return fragmentSize;
    }

    /**
     * Sets the fragment size with fluent interface.
     *
     * @param fragmentSize the fragment size in characters
     * @return this HighlightInfo instance for method chaining
     */

            assertNotNull(results);
            assertEquals(10, results.size());
        }
    }

    /**
     * Test search with zero page size.
     */
    @Test
    public void test_searchWithZeroPageSize() throws Exception {
        try (RankFusionProcessor processor = new RankFusionProcessor()) {

        this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records per page.
     * If page size is not set or is invalid, returns the default page size.
     *
     * @return the page size
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

        assertEquals(0, crawlingConfigHelper.getExcludedUrlList("123").size());
        systemProperties.setProperty(Constants.FAILURE_COUNT_THRESHOLD_PROPERTY, "0");
        assertEquals(0, crawlingConfigHelper.getExcludedUrlList("123").size());
        errorCount.set(5);
        assertEquals(5, crawlingConfigHelper.getExcludedUrlList("123").size());

    }

    /**
     * Gets the page size for pagination.
     * @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size for pagination.
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {

        assertEquals(3, events.size());
        assertEquals("chunk:test content:false", events.get(2));

        callback.onChunk("final content", true);
        assertEquals(4, events.size());
        assertEquals("chunk:final content:true", events.get(3));

        // Test onError
        callback.onError(ChatPhaseCallback.PHASE_SEARCH, "Search failed");
        assertEquals(5, events.size());

        assertTrue(result.isHasRelevantResults());
        assertEquals(1, result.getRelevantDocIds().size());
        assertEquals("doc1", result.getRelevantDocIds().get(0));
        assertEquals(1, result.getRelevantIndexes().size());
        assertEquals(Integer.valueOf(1), result.getRelevantIndexes().get(0));
    }

    @Test
    public void test_withRelevantDocs_emptyLists() {

        this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records to display per page.
     * If the page size is not set or is invalid, returns the default page size.
     *
     * @return the page size
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    }

    /**
     * Returns the page size.
     *
     * @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size.
     *
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {

    }

    /**
     * Gets the page size.
     * @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size.
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {