*/
    void interpolate(
            @Nonnull Map<String, String> map,
            @Nullable UnaryOperator<String> callback,
            @Nullable BinaryOperator<String> postprocessor,
            boolean defaultsToEmpty);

    /**
     * Interpolates a single string value using the provided callback function.

        @Override
        public String getQuery() {
            return null;
        }

        @Override
        public Map<String, String[]> getFields() {
            return null;
        }

        @Override
        public Map<String, String[]> getConditions() {
            return null;
        }

        @Override
        public String[] getLanguages() {
            return null;

        }
    }

    private interface JavadocTagHandler {
        boolean onJavadocTag(String tag, String value);
    }

    private interface HtmlElementHandler {
        boolean onStartElement(String element, Map<String, String> attributes);

        void onText(String text);

        void onEndElement(String element);
    }

    private static class UnknownJavadocTagHandler implements JavadocTagHandler {

        @Override
        protected void storeQueue(List<Tuple3<String, String, String>> taskList) {
            // Override to avoid database operations
            taskList.clear();
        }

        @Override
        protected String getImageFilename(final Map<String, Object> docMap) {
            // Override to avoid null pointer issues
            final String docid = (String) docMap.get("_id");
            if (docid == null) {

    String SCOPE_RUNTIME = "runtime";

    String SCOPE_RUNTIME_PLUS_SYSTEM = "runtime+system";

    String SCOPE_PROVIDED = "provided";

    String SCOPE_SYSTEM = "system";

    String SCOPE_IMPORT = "import"; // Used to import dependencyManagement dependencies

    String getGroupId();

    String getArtifactId();

    String getVersion();

    void setVersion(String version);

        // Test convert with empty language array
        String text = "test text";
        String field = "content";
        String[] langs = new String[0];

        List<String> results = converter.convert(text, field, langs);

        assertNotNull(results);
        // Results may vary based on analyzer configuration
    }

    @Test
    public void testConvertWithSingleLanguage() throws IOException {

        assertNull(user.getName());

        // Test with special characters in name
        user = new TestFessUser("******@****.***", new String[] {}, new String[] {}, new String[] {});
        assertEquals("******@****.***", user.getName());

        // Test with Unicode characters
        user = new TestFessUser("ユーザー名", new String[] {}, new String[] {}, new String[] {});

    @Override
    String normalizeWord(String word) {
      return firstCharOnlyToUpper(word);
    }

    @Override
    String normalizeFirstWord(String word) {
      return Ascii.toLowerCase(word);
    }
  },

  /** Java and C++ class naming convention, e.g., "UpperCamel". */
  UPPER_CAMEL(CharMatcher.inRange('A', 'Z'), "") {
    @Override
    String normalizeWord(String word) {

    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**");
        assertTrue(result.contains("<strong>bold text</strong>"));
    }

    @Test

    String[] strings = NUMBER_NAMES.toArray(new String[0]);
    ImmutableSortedSet<String> set = ImmutableSortedSet.copyOf(strings);
    sort(strings);
    for (int i = 0; i < strings.length; i++) {
      assertThat(set.tailSet(strings[i], true))
          .containsExactlyElementsIn(sortedNumberNames(i, strings.length))
          .inOrder();
    }
  }

  public void testTailSetExclusive() {