*/
    @FunctionalInterface
    public interface UserTypeSupplier {
        /**
         * Supply the user type.
         * @return The user type.
         */
        OptionalThing<String> supply();
    }

    /**
     * The supplier of user bean.
     */
    @FunctionalInterface
    public interface UserBeanSupplier {
        /**
         * Supply the user bean.

     *
     * @param query the search query string
     * @param params the search request parameters including pagination, filters, etc.
     * @param userBean the optional user bean for access control and personalization
     * @return the search result containing matched documents and metadata
     */
    protected abstract SearchResult search(String query, SearchRequestParams params, OptionalThing<FessUserBean> userBean);

    assertThat(Primitives.wrap(String.class)).isEqualTo(String.class);
  }

  public void testUnwrap() {
    assertThat(Primitives.unwrap(Integer.class)).isEqualTo(int.class);
    assertThat(Primitives.unwrap(int.class)).isEqualTo(int.class);
    assertThat(Primitives.unwrap(String.class)).isEqualTo(String.class);
  }

  public void testAllPrimitiveTypes() {

/**
 */
@Deprecated
public interface MavenSettingsBuilder {

    String ROLE = MavenSettingsBuilder.class.getName();

    String ALT_USER_SETTINGS_XML_LOCATION = "org.apache.maven.user-settings";
    String ALT_GLOBAL_SETTINGS_XML_LOCATION = "org.apache.maven.global-settings";
    String ALT_LOCAL_REPOSITORY_LOCATION = "maven.repo.local";

     * @param id The ID of the directory to list.
     * @return A JSON response containing the list of files and directories.
     */
    @Execute
    public JsonResponse<ApiResult> list(final OptionalThing<String> id) {
        final List<Map<String, Object>> list = getFileItems(id.isPresent() ? decodePath(id.get()) : null);
        try {
            return asJson(new ApiResult.ApiStorageResponse().items(list).status(ApiResult.Status.OK).result());

            return source.openStream();
        }

        @Override
        public String getLocation() {
            return source.getLocation();
        }

        @Override
        public ModelSource2 getRelatedSource(String relPath) {
            Source rel = source.resolve(relPath);
            return rel != null ? new SourceWrapper(rel) : null;
        }

@Deprecated(since = "4.0.0")
public abstract class AbstractStringBasedModelInterpolator implements ModelInterpolator {
    private static final List<String> PROJECT_PREFIXES = Arrays.asList("pom.", "project.");

    private static final Collection<String> TRANSLATED_PATH_EXPRESSIONS;

    static {
        Collection<String> translatedPrefixes = new HashSet<>();

        // MNG-1927, MNG-2124, MNG-3355:

    )
    assertThat(callbacks).isEmpty()
  }

  private fun consumeEvents(source: String) {
    val callback: ServerSentEventReader.Callback =
      object : ServerSentEventReader.Callback {
        override fun onEvent(
          id: String?,
          type: String?,
          data: String,
        ) {
          callbacks.add(Event(id, type, data))
        }

            toolchainsWriter.write(stringWriter, null, toolchains);
        } catch (IOException e) {
            throw new IllegalStateException("Failed to serialize toolchains to memory", e);
        }

        String serializedToolchains = stringWriter.toString();

        RegexBasedInterpolator interpolator = new RegexBasedInterpolator();

        try {
            interpolator.addValueSource(new EnvarBasedValueSource());

    }

    /**
     * Appends a key-value pair to the buffer in JSON format.
     *
     * @param buf the string buffer to append to
     * @param key the key name
     * @param supplier the value supplier
     * @return the updated buffer
     */
    protected StringBuilder append(final StringBuilder buf, final String key, final Supplier<Object> supplier) {
        final StringBuilder tempBuf = new StringBuilder();