*/
    private static class CachingAttributeMatcher {
        private final AttributeMatcher matcher;
        private final ConcurrentHashMap<CacheKey, Boolean> cache = new ConcurrentHashMap<>();

        public CachingAttributeMatcher(AttributeMatcher matcher) {
            this.matcher = matcher;
        }

            return null;
        }
        StringBuilder builder = new StringBuilder();
        Matcher matcher = WORD_SEPARATOR.matcher(string);
        int pos = 0;
        boolean first = true;
        while (matcher.find()) {
            String chunk = string.subSequence(pos, matcher.start()).toString();
            pos = matcher.end();
            if (chunk.isEmpty()) {
                continue;
            }

	testCases := []struct {
		err      error
		filter   []Matcher
		expected error
	}{
		{
			nil,
			[]Matcher{},
			nil,
		},
		{
			aggregate{},
			[]Matcher{},
			nil,
		},
		{
			aggregate{fmt.Errorf("abc")},
			[]Matcher{},
			aggregate{fmt.Errorf("abc")},
		},
		{
			aggregate{fmt.Errorf("abc")},
			[]Matcher{func(err error) bool { return false }},

        if (vcsBranch.startsWith("pre-test/")) {
            Matcher matcher = PRE_TEST_BRANCH_PATTERN.matcher(vcsBranch);
            if (matcher.matches()) {
                return matcher.group(1);
            }
        }
        if (vcsBranch.startsWith("gh-readonly-queue/")) {
            Matcher matcher = GH_MERGE_QUEUE_BRANCH_PATTERN.matcher(vcsBranch);
            if (matcher.matches()) {
                return matcher.group(1);

			),
		},
	}

	for name, tt := range table {
		for _, m := range tt.match {
			r := Matcher{tt.rule, m}
			if !r.group() {
				t.Errorf("%v: expected match %#v", name, m)
			}
		}
		for _, m := range tt.noMatch {
			r := Matcher{tt.rule, m}
			if r.group() {
				t.Errorf("%v: expected no match %#v", name, m)
			}
		}
	}
}

        Matcher matcher = UNIQUE_SNAPSHOT.matcher(moduleComponentIdentifier.getVersion());
        if (!matcher.matches()) {
            return null;
        }
        return new MavenUniqueSnapshotModuleSource(matcher.group(1));
    }

    private MavenMetadata parseMavenMetadata(ExternalResourceName metadataLocation) {

			xdsfilters.HTTPInspector,
		},
		TrafficDirection: core.TrafficDirection_INBOUND,
		FilterChains:     chains,
		FilterChainMatcher: &matcher.Matcher{
			MatcherType: &matcher.Matcher_MatcherTree_{
				MatcherTree: &matcher.Matcher_MatcherTree{
					Input: match.DestinationIP,
					TreeType: &matcher.Matcher_MatcherTree_CustomMatch{
						CustomMatch: &xds.TypedExtensionConfig{
							Name:        "ip",

            return null;
        }
        StringBuilder builder = new StringBuilder();
        Matcher matcher = WORD_SEPARATOR.matcher(string);
        int pos = 0;
        boolean first = true;
        while (matcher.find()) {
            String chunk = string.subSequence(pos, matcher.start()).toString();
            pos = matcher.end();
            if (chunk.isEmpty()) {
                continue;
            }

      expectFailure(platformMatches(LOOM_PROPERTY))
    }

    private fun expectFailure(
      versionMatcher: Matcher<out Any>,
      failureMatcher: Matcher<out Any> = anything(),
    ) {
      versionChecks.add(Pair(versionMatcher, failureMatcher))
    }

    fun platformMatches(platform: String): Matcher<Any> =
      object : BaseMatcher<Any>() {
        override fun describeTo(description: Description) {

    protected String parseCharset(final String content) {
        final Pattern pattern = Pattern.compile("; *charset *= *([a-zA-Z0-9\\-_]+)", Pattern.CASE_INSENSITIVE);
        final Matcher matcher = pattern.matcher(content);
        if (matcher.find()) {
            return matcher.group(1);
        }
        return null;
    }

    protected RequestData getDuplicateUrl(final RequestData requestData) {