* https://cs.android.com/android/platform/superproject/+/android-2.3.7_r1:libcore/luni/src/main/java/java/util/regex/Matcher.java;l=550;drc=5850271b4ab93ebc27c1d49169a348c6be3c7f04
   */
  private static MatchResult createMatchResult() {
    Matcher matcher = Pattern.compile(".").matcher("X");
    matcher.find();
    return matcher.toMatchResult();
  }

  private static final ClassToInstanceMap<Object> DEFAULTS =

        int lineNum = 0;
        for (final String line : values) {
            final Matcher matcher = pattern.matcher(line);
            if (matcher.matches()) {
                if (lineNum == 0) {
                    lineNum = Integer.parseInt(matcher.group(1));
                    list.clear();
                }
                list.add(matcher.group(2));
            } else {
                list.add(line);
            }

        }
    }

    private static String parseSourceLang(String lineTrimmed) {
        var m = SOURCE_LANG_PATTERN.matcher(lineTrimmed);
        if (m.matches()) {
            return m.group(1).toLowerCase(Locale.ROOT);
        }
        return null;
    }

    private static Language deduceLanguage(String sourceLang) {

            String line = currentColor + lines[i];

            // look for last ANSI escape sequence to check if nextColor
            Matcher matcher = LAST_ANSI_SEQUENCE.matcher(line);
            String nextColor = "";
            if (matcher.find()) {
                nextColor = matcher.group(1);
                if (ANSI_RESET.equals(nextColor)) {
                    // last ANSI escape code is reset: no next color

  // Adds this tensor to the list of watched tensors.
  //
  // This is a no-op if the tensor is already being watched either from an
  // earlier call to `GradientTape::Watch` or being an output of an op with
  // watched inputs.
  void Watch(const AbstractTensorHandle*);
  // Records an operation with given inputs and outputs
  // on the tape and marks all its outputs as watched if at

    }

    protected BwcVersions(List<String> versionLines, Version currentVersionProperty) {
        this(
            versionLines.stream()
                .map(LINE_PATTERN::matcher)
                .filter(Matcher::matches)
                .map(
                    match -> new Version(
                        Integer.parseInt(match.group(1)),
                        Integer.parseInt(match.group(2)),

                    addViolation(
                            problems, Severity.ERROR, "pluginGroups.pluginGroup[" + i + "]", null, "must not be empty");
                } else if (!ID_REGEX.matcher(pluginGroup).matches()) {
                    addViolation(
                            problems,
                            Severity.ERROR,
                            "pluginGroups.pluginGroup[" + i + "]",

      CallEnd::class,
    )
  }

  private fun assertBytesReadWritten(
    listener: EventRecorder,
    requestHeaderLength: Matcher<Long?>?,
    requestBodyBytes: Matcher<Long?>?,
    responseHeaderLength: Matcher<Long?>?,
    responseBodyBytes: Matcher<Long?>?,
  ) {
    if (requestHeaderLength != null) {
      val responseHeadersEnd = listener.removeUpToEvent<RequestHeadersEnd>()

                throw new IllegalArgumentException("Failed to read " + f + " as UTF_8", e);
            }
            List<Integer> invalidLines = IntStream.range(0, lines.size())
                .filter(i -> allPatterns.matcher(lines.get(i)).find())
                .boxed()
                .collect(Collectors.toList());

            URI baseUri = getRootDir().orElse(projectLayout.getProjectDirectory().getAsFile()).get().toURI();

                    }
                    continue;
                }

                String[] inputs;
                String output;

                final Matcher m = parsePattern.matcher(replacedLine);

                if (!m.find()) {
                    logger.warn("Failed to parse mapping: line={}, path={}", line, path);
                    if (updater != null) {