*/
  public abstract long asLong();

  /**
   * If this hashcode has enough bits, returns {@code asLong()}, otherwise returns a {@code long}
   * value with {@code asBytes()} as the least-significant bytes and {@code 0x00} as the remaining
   * most-significant bytes.
   *
   * @since 14.0 (since 11.0 as {@code Hashing.padToLong(HashCode)})
   */
  public abstract long padToLong();

  /**

      }

      // We can't use .clone() because of GWT.
      byte[] newDecodabet = Arrays.copyOf(decodabet, decodabet.length);
      for (int upper = 'A'; upper <= 'Z'; upper++) {
        int lower = upper | 0x20;
        byte decodeUpper = decodabet[upper];
        byte decodeLower = decodabet[lower];
        if (decodeUpper == -1) {
          newDecodabet[upper] = decodeLower;
        } else {
          checkState(

	d.scratch.reset()
	c := d.next()

scan:
	for {
		switch {
		case c == '"':
			return string(d.scratch.bytes()), nil
		case c == '\\':
			c = d.next()
			goto scan_esc
		case c < 0x20:
			return "", d.mkError(ErrSyntax, "in string literal")
		// Coerce to well-formed UTF-8.
		default:
			d.scratch.add(c)
			if d.remaining() == 0 {
				return "", d.mkError(ErrSyntax, "in string literal")
			}

    continuation.length = continuation.left
    continuation.padding = padding
    continuation.flags = flags
    continuation.streamId = streamId

    // TODO: Concat multi-value headers with 0x0, except COOKIE, which uses 0x3B, 0x20.
    // http://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-8.1.2.5
    hpackReader.readHeaders()
    return hpackReader.getAndResetHeaderList()
  }

  @Throws(IOException::class)

      // TODO(cpovirk): Use SourceCodeEscapers if it is added to Guava.
      StringBuilder escapedInput = new StringBuilder();
      for (char c : input.toCharArray()) {
        if (c >= 0x20 && c <= 0x7E) {
          escapedInput.append(c);
        } else {
          escapedInput.append(String.format("\\u%04x", (int) c));
        }
      }

    assertEquals(asList("a", "b", "c", "d"), list);
    b.set(0, "f");
    assertEquals(asList("a", "b", "c", "d"), list);
  }

  public void testComplexBuilder() {
    List<Integer> colorElem = asList(0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF);
    ImmutableList.Builder<Integer> webSafeColorsBuilder = ImmutableList.builder();
    for (Integer red : colorElem) {
      for (Integer green : colorElem) {

FCF1          ; mapped                 ; 064A 0647     # 1.1  ARABIC LIGATURE YEH WITH HEH MEDIAL FORM
FCF2          ; mapped                 ; 0640 064E 0651 #1.1  ARABIC LIGATURE SHADDA WITH FATHA MEDIAL FORM
FCF3          ; mapped                 ; 0640 064F 0651 #1.1  ARABIC LIGATURE SHADDA WITH DAMMA MEDIAL FORM
FCF4          ; mapped                 ; 0640 0650 0651 #1.1  ARABIC LIGATURE SHADDA WITH KASRA MEDIAL FORM

			prefix = p.parseString(ustar.prefix())

			// For Format detection, check if block is properly formatted since
			// the parser is more liberal than what USTAR actually permits.
			notASCII := func(r rune) bool { return r >= 0x80 }
			if bytes.IndexFunc(tr.blk[:], notASCII) >= 0 {
				hdr.Format = FormatUnknown // Non-ASCII characters in block.
			}
			nul := func(b []byte) bool { return int(b[len(b)-1]) == 0 }

  Returns:
    An integer if converted successfully, otherwise return None.
  """
  version = version.split('-')[0]
  version_segments = version.split('.')
  # Treat "0.24" as "0.24.0"
  if len(version_segments) == 2:
    version_segments.append('0')
  for seg in version_segments:
    if not seg.isdigit():
      return None

## 0.91.0

### Upgrades

* ⬆️ Upgrade Starlette version to `0.24.0` and refactor internals for compatibility. PR [#5985](https://github.com/tiangolo/fastapi/pull/5985) by [@tiangolo](https://github.com/tiangolo).