* 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 =

)

func TestIsRequested(t *testing.T) {
	for i, test := range kmsIsRequestedTests {
		_, got := IsRequested(test.Header)
		if Requested(test.Header) != got {
			// Test if result matches.
			t.Errorf("Requested mismatch, want %v, got %v", Requested(test.Header), got)
		}
		got = got && S3KMS.IsRequested(test.Header)
		if got != test.Expected {

	logLevel string
}

type scopeStackTraceLevelPair ScopeLevelPair

func newScopeLevelPair(slp, validationPattern string) (*ScopeLevelPair, error) {
	matched, err := regexp.MatchString(validationPattern, slp)
	if err != nil {
		return nil, err
	}
	if !matched {
		return nil, fmt.Errorf("pattern %s did not match", slp)
	}
	scopeLogLevel := strings.Split(slp, ":")
	s := &ScopeLevelPair{
		scope:    scopeLogLevel[0],

  private static final PatternCompiler patternCompiler = loadPatternCompiler();

  private Platform() {}

  static CharMatcher precomputeCharMatcher(CharMatcher matcher) {
    return matcher.precomputedInternal();
  }

  static <T extends Enum<T>> Optional<T> getEnumIfPresent(Class<T> enumClass, String value) {
    WeakReference<? extends Enum<?>> ref = Enums.getEnumConstants(enumClass).get(value);

	vc, err := sys.Get(bucket)
	if err != nil {
		logger.CriticalIf(GlobalContext, err)
	}
	return vc.Suspended()
}

// PrefixSuspended returns true if the given prefix matches an excluded prefix
// pattern. This is part of a MinIO versioning configuration extension.
func (sys *BucketVersioningSys) PrefixSuspended(bucket, prefix string) bool {
	vc, err := sys.Get(bucket)
	if err != nil {

	}
	if len(c.Encoded) == 0 || c.Type.Trailing() {
		return c.Type.Is(ChecksumNone) || c.Type.Trailing()
	}
	raw := c.Raw
	return c.Type.RawByteLen() == len(raw)
}

// Matches returns whether given content matches c.
func (c Checksum) Matches(content []byte, parts int) error {
	if len(c.Encoded) == 0 {
		return nil
	}
	hasher := c.Type.Hasher()
	_, err := hasher.Write(content)
	if err != nil {
		return err
	}

	case <-ctx.Done():
		return ctx.Err()
	}
}

func (w *Watcher) Close() {
	_ = w.watcher.Close()
}

// Creates a file watcher that watches for any changes to the directory
func CreateFileWatcher(paths ...string) (*Watcher, error) {
	watcher, err := fsnotify.NewWatcher()
	if err != nil {
		return nil, fmt.Errorf("watcher create: %v", err)
	}

	fileModified, errChan := make(chan struct{}), make(chan error)

        if (StringUtil.isBlank(urlKey)) {
            return null;
        }

        for (final Map.Entry<Pattern, CrawlerClient> entry : clientMap.entrySet()) {
            final Matcher matcher = entry.getKey().matcher(urlKey);
            if (matcher.matches()) {
                return entry.getValue();
            }
        }
        return null;
    }

    public void setInitParameterMap(final Map<String, Object> params) {

            if (hasProjectExpression(s)) {
                String path = pathSupplier.get();
                Matcher matcher = EXPRESSION_PROJECT_NAME_PATTERN.matcher(s);
                while (matcher.find()) {
                    String propertyName = matcher.group(0);

                    if (path.startsWith("activation.file.") && "${project.basedir}".equals(propertyName)) {
                        continue;

  private val typeHint: Boolean = false,
) : DerAdapter<T> {
  init {
    require(tagClass >= 0)
    require(tag >= 0)
  }

  override fun matches(header: DerHeader): Boolean = header.tagClass == tagClass && header.tag == tag

  override fun fromDer(reader: DerReader): T {
    val peekedHeader = reader.peekHeader()