}
  }

  // TODO GET preferred order - with tests to confirm this
  // 1. successful fresh cached GET response
  // 2. unsuccessful (404, 500) fresh cached GET response
  // 3. successful network response
  // 4. successful stale cached GET response
  // 5. unsuccessful response
  @Test
  fun usesCache() {
    val cache = Cache(cacheFs, "cache".toPath(), (100 * 1024).toLong())

    serverIpv4.close()
    serverIpv6.close()

    val call = client.newCall(Request(url))
    assertFailsWith<IOException> {
      call.execute()
    }

    // In the process we made two unsuccessful connection attempts.
    assertThat(listener.recordedEventTypes().filter { it == "ConnectStart" }).hasSize(2)
    assertThat(listener.recordedEventTypes().filter { it == "ConnectFailed" }).hasSize(2)
  }

  )
  fun code(): Int = code

  /**
   * Returns true if the code is in [200..300), which means the request was successfully received,
   * understood, and accepted.
   */
  val isSuccessful: Boolean = code in 200..299

  @JvmName("-deprecated_message")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "message"),
    level = DeprecationLevel.ERROR,
  )

        val request = Request.Builder()
            .url("https://publicobject.com/helloworld.txt")
            .build()

        client.newCall(request).execute().use { response ->
          if (!response.isSuccessful) throw IOException("Unexpected code $response")

          for ((name, value) in response.headers) {
            println("$name: $value")
          }

          println(response.body!!.string())
        }

        RangeQueryBuilder rangeQuery = (RangeQueryBuilder) deleteQuery;
        assertEquals("expires", rangeQuery.fieldName());
        assertEquals("now", rangeQuery.to());

        // Assert result is empty when successful
        assertEquals("", result);
    }

    public void test_execute_withException() {
        // Create mock SearchEngineClient that throws exception
        searchEngineClient = new SearchEngineClient() {

          in: query
          description: Callback name for using JSONP
          required: false
          schema:
            type: string
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                type: object
                properties:
                  q:
                    type: string

        });
    }

    /**
     * Upload a stopwords file.
     *
     * @param form the upload form containing the file and dictionary ID
     * @return HTML response redirecting to the list page after successful upload
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse upload(final UploadForm form) {
        validate(form, messages -> {}, () -> uploadpage(form.dictId));

                }
            }
        });
        refresh();
    }

    /**
     * Indexes suggest data from documents.
     *
     * @param success A callback for successful indexing.
     * @param error   A callback for indexing errors.
     */
    public void indexFromDocuments(final Consumer<Boolean> success, final Consumer<Throwable> error) {

      fun run() {
        val request = Request.Builder()
            .url("https://publicobject.com/robots.txt")
            .build()

        client.newCall(request).execute().use { response ->
          if (!response.isSuccessful) throw IOException("Unexpected code $response")

          for (certificate in response.handshake!!.peerCertificates) {
            println(CertificatePinner.pin(certificate))
          }
        }
      }
    ```

    /**
     * Processes thumbnail generation with a consumer function.
     * @param id The document ID.
     * @param consumer The consumer function to process thumbnail and config ID.
     * @return True if processing was successful, false otherwise.
     */
    protected boolean process(final String id, final BiPredicate<String, String> consumer) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();