Map<String, Object> doc1 = new HashMap<>();
        doc1.put("title", "Doc1");
        Map<String, Object> doc2 = new HashMap<>();
        doc2.put("title", "Doc2");
        documentList.add(doc1);

        QueryResponseList qrList = new QueryResponseList(documentList, 0, 10, 0);

        assertTrue(qrList.contains(doc1));
        assertFalse(qrList.contains(doc2));

                // Simulate storing documents
                Map<String, Object> doc1 = new HashMap<>();
                doc1.put("id", "1");
                doc1.put("title", "Document 1");
                callback.store(initParamMap, doc1);

                Map<String, Object> doc2 = new HashMap<>();
                doc2.put("id", "2");

        MockletHttpServletRequest request = getMockRequest();

        List<Map<String, Object>> documentItems = new ArrayList<>();
        Map<String, Object> doc1 = new HashMap<>();
        doc1.put("docId", "doc1");
        doc1.put("title", "Test Document 1");
        documentItems.add(doc1);

        try {
            userInfoHelper.storeQueryId("query1", documentItems);
            assertTrue(true);
        } catch (Exception e) {

        // Test with populated list
        List<Map<String, Object>> documentItems = new ArrayList<>();
        Map<String, Object> doc1 = new HashMap<>();
        doc1.put("title", "Test Document 1");
        doc1.put("content", "Test content 1");
        documentItems.add(doc1);

        Map<String, Object> doc2 = new HashMap<>();
        doc2.put("title", "Test Document 2");
        doc2.put("content", "Test content 2");

                    <version>1.0.0</version>
                </project>
                """;

            Document doc1 = Document.of(pomXml);
            Document doc2 = Document.of(pomXml);

            Map<Path, Document> pomMap = new HashMap<>();
            pomMap.put(Paths.get("/project/pom1.xml"), doc1);
            pomMap.put(Paths.get("/project/pom2.xml"), doc2);

            UpgradeContext context = createMockContext();

        final ChatMessage msg = ChatMessage.assistantMessage("Response text");
        final Map<String, Object> doc1 = new HashMap<>();
        doc1.put("title", "Installation Guide");
        doc1.put("url", "http://example.com/install");
        msg.addSource(new ChatSource(1, doc1));
        final Map<String, Object> doc2 = new HashMap<>();
        doc2.put("title", "Quick Start");

        when(mockSearchHits.getHits()).thenReturn(new SearchHit[] { mockHit }, new SearchHit[0]);
        when(mockHit.getIndex()).thenReturn("test-index");
        when(mockHit.getId()).thenReturn("doc1");

        // Setup scroll response (empty on second call)
        when(mockClient.prepareSearchScroll("scroll1")).thenReturn(mockScrollBuilder);

        SuggestItem[] items = new SuggestItem[3];

        // Document only
        String[][] readings1 = new String[1][];
        readings1[0] = new String[] { "doc1" };
        items[0] = new SuggestItem(new String[] { "ドキュメント1" }, readings1, new String[] { "content" }, 1, 0, -1, new String[] { "tag1" },

     */
    @Test
    public void test_duplicateDocumentIds() throws Exception {
        try (RankFusionProcessor processor = new RankFusionProcessor()) {
            processor.setSearcher(new TestSearcherWithFixedIds("doc1", "doc2", "doc3"));
            processor.register(new TestSearcherWithFixedIds("doc2", "doc3", "doc4")); // Some duplicates
            processor.init();

        }

        // Sort all documents by fused RRF score (descending)
        final var fusedDocs = documentsByIdMap.values()
                .stream()
                .sorted((doc1, doc2) -> Float.compare(toFloat(doc2.get(scoreField)), toFloat(doc1.get(scoreField))))
                .toList();

        // Calculate offset based on documents not in main searcher's top results
        int offset = 0;