@Override
            public int size() {
                return (int) properties.entrySet().stream()
                        .filter(PropertiesAsMap::matches)
                        .count();
            }
        };
    }

    private static boolean matches(Entry<Object, Object> entry) {
        return entry.getKey() instanceof String && entry.getValue() instanceof String;
    }

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> {

                    }
                    continue;
                }

                String[] inputs;
                String output;

                final Matcher m = parsePattern.matcher(replacedLine);

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

/**
 * 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();

    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;

    public void test_string() {
        final DocBoostMatcher docBoostMatcher = new DocBoostMatcher();
        docBoostMatcher.setBoostExpression("10");
        docBoostMatcher.setMatchExpression("data1 != null && data1.matches(\"test\")");

        final Map<String, Object> map = new HashMap<String, Object>();

        map.put("data1", "test");
        assertTrue(docBoostMatcher.match(map));

        map.put("data1", "aaa test bbb");

import com.google.common.base.CharMatcher.NamedFastMatcher;
import java.util.BitSet;

/**
 * An immutable version of CharMatcher for smallish sets of characters that uses a hash table with
 * linear probing to check for matches.
 *
 * @author Christopher Swenson
 */
@GwtIncompatible // no precomputation is done in GWT
@ElementTypesAreNonnullByDefault
final class SmallCharMatcher extends NamedFastMatcher {
  static final int MAX_SIZE = 1023;

                () -> newModelResolver().resolveModel(session, parent, new AtomicReference<>()),
                "Expected 'ModelResolverException' not thrown.");
        assertEquals("No versions matched the requested version range '[2.0,2.1)'", e.getMessage());
    }

    @Test
    void testResolveParentThrowsModelResolverExceptionWhenUsingRangesWithoutUpperBound() throws Exception {

        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()) {

    }

    public WebApiManager get(final HttpServletRequest request) {
        for (final WebApiManager webApiManager : webApiManagers) {
            if (webApiManager.matches(request)) {
                return webApiManager;
            }
        }
        return null;
    }