}

  private static final class JdkMatcher extends CommonMatcher {
    final Matcher matcher;

    JdkMatcher(Matcher matcher) {
      this.matcher = Preconditions.checkNotNull(matcher);
    }

    @Override
    public boolean matches() {
      return matcher.matches();
    }

    @Override
    public boolean find() {
      return matcher.find();
    }

    @Override
    public boolean find(int index) {

        when:
        def consumer = versionAttribute(currentGradleVersion)
        def producer = versionAttribute('7.0')

        then:
        accepts == (schema.matcher().matches([producer], consumer, ep) == [producer])
        accepts == schema.matcher().isMatching(producer, consumer)

        where:
        currentGradleVersion       | acceptsOrRejects
        '7.0'                      | 'accepts'

        if (!attributeBasedMappings.isEmpty()) {
            AttributeMatcher matcher = schema.matcher();
            Set<ImmutableAttributes> candidates = attributeBasedMappings.keySet();
            List<ImmutableAttributes> matches = matcher.matches(candidates, variantAttributes, AttributeMatchingExplanationBuilder.NO_OP);
            if (matches.size() == 1) {

            for (SpecMatcher matcher : matchers) {
                boolean matches;
                if (details.isVersionListing()) {
                    matches = matcher.matches(details.getModuleId());
                } else {
                    matches = matcher.matches(details.getComponentId());
                }
                if (matches) {
                    return true;
                }

  }

  private static final class JdkMatcher extends CommonMatcher {
    final Matcher matcher;

    JdkMatcher(Matcher matcher) {
      this.matcher = Preconditions.checkNotNull(matcher);
    }

    @Override
    public boolean matches() {
      return matcher.matches();
    }

    @Override
    public boolean find() {
      return matcher.find();
    }

    @Override
    public boolean find(int index) {

	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apiserver/pkg/admission"
)

// Matcher determines if the Attr matches the Rule.
type Matcher struct {
	Rule v1.RuleWithOperations
	Attr admission.Attributes
}

// Matches returns if the Attr matches the Rule.
func (r *Matcher) Matches() bool {
	return r.scope() &&
		r.operation() &&
		r.group() &&
		r.version() &&
		r.resource()
}

// when multiple matches are possible
type PriorityRESTMapper struct {
	// Delegate is the RESTMapper to use to locate all the Kind and Resource matches
	Delegate RESTMapper

	// ResourcePriority is a list of priority patterns to apply to matching resources.
	// The list of all matching resources is narrowed based on the patterns until only one remains.

            final Matcher matcher = pattern.matcher(v.trim());
            if (matcher.matches()) {
                final PrunedTag tag = new PrunedTag(matcher.group(1));
                if (matcher.group(2) != null) {
                    final String attrPair = matcher.group(2).substring(1, matcher.group(2).length() - 1);

     */
    @Nullable
    public static File findScalaJar(Iterable<File> classpath, String appendix) {
        for (File file : classpath) {
            Matcher matcher = SCALA_JAR_PATTERN.matcher(file.getName());
            if (matcher.matches() && matcher.group(1).equals(appendix)) {
                return file;
            }
        }
        return null;
    }

    /**

		port := retrieveListenerPort(l)
		if filter.Verbose {

			matches := retrieveListenerMatches(l)
			sort.Slice(matches, func(i, j int) bool {
				return matches[i].destination > matches[j].destination
			})
			for _, match := range matches {
				if includeConfigType {
					name := fmt.Sprintf("listener/%s", l.Name)