Matcher matcher = linkPattern.matcher(line);
        while (matcher.find()) {
            MatchResult xrefMatcher = matcher.toMatchResult();
            String link = xrefMatcher.group(1);
            if (link.contains("#")) {
                Matcher linkMatcher = linkWithHashPattern.matcher(link);
                if (linkMatcher.matches()) {

    bitSet.clear(0);
    bitSet.clear(1);
    matcher = useNew ? CharMatcher.whitespace() : OLD_WHITESPACE;
    teststring = newTestString(new Random(1), bitSet, percentMatching);
  }

  @Benchmark
  public int countIn(int reps) {
    int result = 0;
    CharMatcher matcher = this.matcher;
    String teststring = this.teststring;
    for (int i = 0; i < reps; i++) {
      result += matcher.countIn(teststring);
    }
    return result;

        findAnnotations(methodDeclaration, methodMetaData);
        extractParameters(methodDeclaration, methodMetaData);

        Matcher matcher = GETTER_METHOD_NAME.matcher(name);
        if (matcher.matches()) {
            int startName = matcher.start(2);
            String propName = name.substring(startName, startName + 1).toLowerCase() + name.substring(startName + 1);

                return false;
            }
            i++;
            cpos++;
        }
        return true;
    }

    public boolean lookingAt(Pattern pattern) {
        Matcher m = pattern.matcher(input);
        m.region(pos, input.length());
        return m.lookingAt();
    }

    public String region() {
        return input.substring(markPos, pos);
    }

    /**

        final Matcher matcher = pattern.matcher(value);
        while (matcher.find()) {
            final String key = matcher.group(2);
            String replacement = System.getProperty(key);
            if (replacement == null) {
                replacement = matcher.group(1);
            }

    public final CharMatcher matcher;
    public final String matchingChars;

    SampleMatcherConfig(String matchingChars) {
      this(CharMatcher.anyOf(matchingChars), matchingChars);
    }

    SampleMatcherConfig(CharMatcher matcher, String matchingChars) {
      this.matcher = matcher;
      this.matchingChars = matchingChars;
    }
  }

package org.apache.maven.project;

import org.apache.maven.model.building.ModelProblem;
import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
import org.hamcrest.Matcher;

import static java.util.stream.Collectors.joining;

/**
 * Hamcrest matcher to help create fluent assertions about {@link ProjectBuildingResult} instances.
 */
class ProjectBuildingResultWithProblemMessageMatcher extends BaseMatcher<ProjectBuildingResult> {

    bus = new AsyncEventBus(executor);
  }

  public void testBasicDistribution() {
    StringCatcher catcher = new StringCatcher();
    bus.register(catcher);

    // We post the event, but our Executor will not deliver it until instructed.
    bus.post(EVENT);

    List<String> events = catcher.getEvents();
    assertTrue("No events should be delivered synchronously.", events.isEmpty());

/**
 * The subset of the {@link java.util.regex.Matcher} API which is used by this package, and also
 * shared with the {@code re2j} library. For internal use only. Please refer to the {@code Matcher}
 * javadoc for details.
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
abstract class CommonMatcher {
  public abstract boolean matches();

  public abstract boolean find();

  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);