// simultaneous update for same key, expect count successful updates
    doParallelCacheOp(count, n -> cache.asMap().computeIfPresent(key, (k, v) -> v + delimiter + n));
    assertThat(cache.size()).isEqualTo(1);
    assertThat(cache.getIfPresent(key).split(delimiter)).hasLength(count + 1);
  }

  public void testComputeIfPresentRemove() {
    List<RemovalNotification<Integer, Integer>> notifications = new ArrayList<>();

        continue
      }

      DELIMITER_NEWLINE -> {
        continue
      }

      DELIMITER_DOT, DELIMITER_SPACE, DELIMITER_SEMICOLON -> {
        throw IOException("unexpected delimiter")
      }
    }

    // "002F" or "0000..002C"
    val sourceCodePoint0 = readHexadecimalUnsignedLong()
    val sourceCodePoint1 =
      when (select(optionsDot)) {
        DELIMITER_DOT -> {

    @get:JvmName("boundary") val boundary: String,
  ) : Closeable {
    /** This delimiter typically precedes the first part. */
    private val dashDashBoundary =
      Buffer()
        .writeUtf8("--")
        .writeUtf8(boundary)
        .readByteString()

    /**
     * This delimiter typically precedes all subsequent parts. It may also precede the first part
     * if the body contains a preamble.

    var b = 0
    for (codePoint in input) {
      if (codePoint < INITIAL_N) {
        result.writeByte(codePoint)
        b++
      }
    }

    // Copy a delimiter if any basic code points were emitted.
    if (b > 0) result.writeByte('-'.code)

    var n = INITIAL_N
    var delta = 0
    var bias = INITIAL_BIAS
    var h = b
    while (h < input.size) {

	return fullBuffers, frag, totalLen, err
}

// ReadBytes reads until the first occurrence of delim in the input,
// returning a slice containing the data up to and including the delimiter.
// If ReadBytes encounters an error before finding a delimiter,
// it returns the data read before the error and the error itself (often io.EOF).
// ReadBytes returns err != nil if and only if the returned data does not end in
// delim.

                        const promptStart = line.indexOf(promptLiteralStart);
                        if (promptStart === -1) {
                            console.error("Custom prompt found but no end delimiter", line)
                        }
                        const prompt = line.slice(0, promptStart).replace(customPromptLiteralStart, "")
                        let value = line.slice(promptStart + promptLiteralStart.length);

  }
}

/**
 * Consumes and returns a non-empty token, terminating at special characters in
 * [TOKEN_DELIMITERS]. Returns null if the buffer is empty or prefixed with a delimiter.
 */
private fun Buffer.readToken(): String? {
  var tokenSize = indexOfElement(TOKEN_DELIMITERS)
  if (tokenSize == -1L) tokenSize = size

  return when {
    tokenSize != 0L -> readUtf8(tokenSize)

                break;
            }
        }
        return new String(buf);
    }

    /**
     * Splits the string by the specified delimiter.
     *
     * @param str
     *            the string to split
     * @param delim
     *            the delimiter to use for splitting
     * @return an array of split strings
     */
    public static String[] split(final String str, final String delim) {

        }
        return text.replaceAll("<[^>]+>", "");
    }

    /**
     * Sanitizes document content by escaping delimiter-like sequences
     * to prevent boundary spoofing in LLM prompts.
     *
     * @param text the text to sanitize
     * @return the sanitized text with delimiter sequences escaped
     */
    protected String sanitizeDocumentContent(final String text) {
        if (StringUtil.isBlank(text)) {

   * {@code joiner}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code joiner.join(stream.iterator())}, or, if you are not
   * using any optional {@code Joiner} features, {@code
   * stream.collect(Collectors.joining(delimiter)}.
   *
   * @since 18.0
   */
  public final String join(Joiner joiner) {
    return joiner.join(this);
  }

  /**
   * Returns the element at the specified position in this fluent iterable.