val buffer = Buffer()
        try {
          sink.use {
            source.use {
              while (true) {
                val byteCount = source.read(buffer, 8192L)
                if (byteCount == -1L) break
                sink.write(buffer, byteCount)
                sink.emit()
              }
            }
          }
        } catch (e: IOException) {
          logger.log(Level.WARNING, "$name failed", e)

    /**
     * Exception thrown when no healthy channels are available
     */
    public static class NoAvailableChannelException extends RuntimeException {

        private static final long serialVersionUID = 1L;

        /**
         * Create exception
         *
         * @param message error message
         */
        public NoAvailableChannelException(String message) {
            super(message);

            return null;
        }
    }

    // Mock FessConfig implementation
    private class MockFessConfig extends TestFessConfig {
        private static final long serialVersionUID = 1L;
        private String jvmSuggestOptions = "";
        private boolean useOwnTmpDir = false;

        public void setJvmSuggestOptions(String options) {
            this.jvmSuggestOptions = options;
        }

          }
        }.buffer()
    }

    override fun contentType(): MediaType? = contentType?.toMediaTypeOrNull()

    override fun contentLength(): Long = contentLength?.toLongOrDefault(-1L) ?: -1L

    override fun source(): BufferedSource = bodySource
  }

  companion object {
    private const val VERSION = 201105
    private const val ENTRY_METADATA = 0
    private const val ENTRY_BODY = 1

        .code(200)
        .message("OK")
        .body(
          object : ResponseBody() {
            override fun contentType(): MediaType? = null

            override fun contentLength(): Long = -1L

            override fun source(): BufferedSource = error("unexpected call")
          },
        ).trailers(
          object : TrailersSource {
            override fun get(): Headers = headersOf("t1", "v1")

                    try {
                        int failures = Math.min(registration.getHeartbeatFailures(), MAX_FAILURE_LIMIT);
                        long backoffDelay = Math.min(MAX_ERROR_BACKOFF, BASE_ERROR_DELAY * (1L << failures));
                        Thread.sleep(backoffDelay);
                    } catch (InterruptedException ie) {
                        Thread.currentThread().interrupt();
                        break;

    //                                                                          Definition
    //                                                                          ==========
    private static final long serialVersionUID = 1L;
    protected static final Class<?> suppressUnusedImportLocalDateTime = LocalDateTime.class;

    // ===================================================================================

    //                                                                          Definition
    //                                                                          ==========
    private static final long serialVersionUID = 1L;
    protected static final Class<?> suppressUnusedImportLocalDateTime = LocalDateTime.class;

    // ===================================================================================

        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getFesenHttpSslCertificateAuthorities() {
                return certificateAuthorities;
            }

            @Override

                testEncryptionKey, testEncryptionKey);

        // Test initial encryption
        byte[] plaintext1 = "Before rotation".getBytes();
        byte[] encrypted1 = context.encryptMessage(plaintext1, 1L);
        byte[] decrypted1 = context.decryptMessage(encrypted1);
        assertArrayEquals(plaintext1, decrypted1);

        // When - Rotate keys
        byte[] newEncKey = new byte[16];