},
        "dutch_keywords": {
          "type":       "keyword_marker",
          "keywords": ["hallo", "wereld", "zoeken"]
        },
        "dutch_stemmer": {
          "type":       "stemmer",

        },
        "dutch_keywords": {
          "type":       "keyword_marker",
          "keywords": ["hallo", "wereld", "zoeken"]
        },
        "dutch_stemmer": {
          "type":       "stemmer",

        assertEquals("hello", DocumentUtil.encodeUrl("hello"));
        assertEquals("hello-world", DocumentUtil.encodeUrl("hello-world"));
        assertEquals("hello_world", DocumentUtil.encodeUrl("hello_world"));
        assertEquals("hello.world", DocumentUtil.encodeUrl("hello.world"));
    }

    @Test
    public void test_encodeUrl_empty_and_null() {

        BooleanFunction<String> startsWithHello = s -> s != null && s.startsWith("hello");

        assertTrue(startsWithHello.apply("hello world"));
        assertTrue(startsWithHello.apply("hello"));
        assertFalse(startsWithHello.apply("hi world"));
        assertFalse(startsWithHello.apply(""));
        assertFalse(startsWithHello.apply(null));
    }

    @Test
    public void test_method_reference() {

        assertEquals("", chatClient.testEscapeQueryValue(""));
    }

    @Test
    public void test_escapeQueryValue_noSpecialChars() {
        assertEquals("hello world", chatClient.testEscapeQueryValue("hello world"));
    }

    @Test
    public void test_escapeQueryValue_backslash() {
        assertEquals("path\\\\to\\\\file", chatClient.testEscapeQueryValue("path\\to\\file"));
    }

        String testValue = "HELLO WORLD";
        OptionalEntity<String> result = OptionalUtil.ofNullable(testValue);

        assertTrue(result.isPresent());

        // Test that we can chain operations
        String processed = result.map(s -> s.toLowerCase()).orElse("default");

        assertEquals("hello world", processed);

        // Test with null value

                return null;
            }
        });

        mimeTypeHelper.init();

        // Null config means no override
        try (InputStream is = new ByteArrayInputStream("Hello world".getBytes(StandardCharsets.UTF_8))) {
            assertEquals("text/plain", mimeTypeHelper.getContentType(is, "test.txt"));
        }
    }

    @Test
    public void test_init_singleMapping() throws IOException {

        assertEquals("", markdownRenderer.render(""));
    }

    @Test
    public void test_render_plainText() {
        String result = markdownRenderer.render("Hello World");
        assertTrue(result.contains("Hello World"));
        assertTrue(result.contains("<p>"));
    }

    @Test
    public void test_render_bold() {
        String result = markdownRenderer.render("**bold text**");

        assertNull(response.getModel());
    }

    @Test
    public void test_constructorWithContent() {
        final LlmChatResponse response = new LlmChatResponse("Hello, World!");
        assertEquals("Hello, World!", response.getContent());
        assertNull(response.getFinishReason());
        assertNull(response.getPromptTokens());
        assertNull(response.getCompletionTokens());

        }
    }

    @Test
    public void test_startProcess_withBufferSizeAndCallback() {
        String sessionId = "test_session_buffer";
        List<String> cmdList = Arrays.asList("echo", "hello world");
        Consumer<ProcessBuilder> pbCall = pb -> {
            pb.redirectErrorStream(true);
        };

        List<String> outputs = new ArrayList<>();