for (int i = 1; key != null || value != null; i++) {
            List values = (List) map.get(key);
            if (values == null) {
                values = new ArrayList();
                map.put(key, values);
            }
            values.add(value);
            key = connection.getHeaderFieldKey(i);
            value = connection.getHeaderField(i);
        }

      new ImmutableTable.Builder<String, SecretKey, HashFunction>()
          .put("HmacMD5", MD5_KEY, Hashing.hmacMd5(MD5_KEY))
          .put("HmacSHA1", SHA1_KEY, Hashing.hmacSha1(SHA1_KEY))
          .put("HmacSHA256", SHA256_KEY, Hashing.hmacSha256(SHA256_KEY))
          .put("HmacSHA512", SHA512_KEY, Hashing.hmacSha512(SHA512_KEY))
          .buildOrThrow();

  public void testNulls() {

    * Swagger UI.
    * ReDoc.

---

Quay trở lại ví dụ trước, **FastAPI** sẽ thực hiện:

* Kiểm tra xem có một `item_id` trong đường dẫn với các request `GET` và `PUT` không?
* Kiểm tra xem `item_id` có phải là kiểu `int` trong các request `GET` và `PUT` không?
    * Nếu không, client sẽ thấy một lỗi rõ ràng và hữu ích.

        metadata.put(key, values);
    }

    /**
     * Puts a single value for a given key in the metadata.
     *
     * @param key the metadata key
     * @param value the value to associate with the key
     */
    public void putValue(final String key, final String value) {
        metadata.put(key, new String[] { value });
    }

    /**

    @BeforeClass
    public static void beforeClass() throws Exception {
        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
            // settingsBuilder.putList("discovery.seed_hosts", "127.0.0.1:9301");
            // settingsBuilder.putList("cluster.initial_master_nodes", "127.0.0.1:9301");

    @BeforeClass
    public static void beforeClass() throws Exception {
        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
            // settingsBuilder.putList("discovery.seed_hosts", "127.0.0.1:9301");
            // settingsBuilder.putList("cluster.initial_master_nodes", "127.0.0.1:9301");

     *
     * @param body the request header data to update
     * @return JSON response containing the updated request header setting ID
     */
    // PUT /api/admin/reqheader/setting
    @Execute
    public JsonResponse<ApiResult> put$setting(final EditBody body) {
        validateApi(body, messages -> {});
        body.crudMode = CrudMode.EDIT;

     *
     * @param body the web authentication data to update
     * @return JSON response containing the updated web authentication setting ID
     */
    // PUT /api/admin/webauth/setting
    @Execute
    public JsonResponse<ApiResult> put$setting(final EditBody body) {
        validateApi(body, messages -> {});
        body.crudMode = CrudMode.EDIT;

    }

    // PUT /api/admin/accesstoken/setting
    /**
     * Updates an existing access token setting.
     *
     * @param body the edit body containing updated access token data
     * @return JSON response with the updated access token ID
     */
    @Execute
    public JsonResponse<ApiResult> put$setting(final EditBody body) {
        validateApi(body, messages -> {});

        assertEquals("test/path", emptyGenerator.expandPath("test/path"));
        assertNull(emptyGenerator.expandPath(null));

        // Test with file path mappings
        emptyGenerator.filePathMap.put("${path}/test", "/usr/bin/test");
        assertEquals("/usr/bin/test", emptyGenerator.expandPath("${path}/test"));
        assertEquals("other/path", emptyGenerator.expandPath("other/path"));
    }