for (BlockingQueue<Object> q : blockingQueues()) {
      testMultipleProducers(q);
    }
  }

  private void testMultipleProducers(BlockingQueue<Object> q) throws InterruptedException {
    for (boolean interruptibly : new boolean[] {true, false}) {
      @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
      Future<?> possiblyIgnoredError = threadPool.submit(new Producer(q, 20));

@GwtCompatible
public interface MapDifference<K extends @Nullable Object, V extends @Nullable Object> {
  /**
   * Returns {@code true} if there are no differences between the two maps; that is, if the maps are
   * equal.
   */
  boolean areEqual();

  /**
   * Returns an unmodifiable map containing the entries from the left map whose keys are not present
   * in the right map.
   */
  Map<K, V> entriesOnlyOnLeft();

  /**

import org.apache.maven.api.cli.cisupport.CIInfo;

import static java.util.Objects.requireNonNull;

public class BaseInvokerRequest implements InvokerRequest {
    private final ParserRequest parserRequest;
    private final boolean parsingFailed;
    private final Path cwd;
    private final Path installationDirectory;
    private final Path userHomeDirectory;
    private final Map<String, String> userProperties;

    private final boolean signingEnforced;
    private String[] dialects;

    /**
     * Creates a new SMB1 negotiate request to establish protocol parameters.
     *
     * @param config the CIFS configuration
     * @param signingEnforced whether SMB signing is enforced
     */
    public SmbComNegotiate(final Configuration config, final boolean signingEnforced) {
        super(config, SMB_COM_NEGOTIATE);

    /**
     * Checks if this item has been updated.
     * @return true if updated, false otherwise
     */
    public boolean isUpdated() {
        return newInput != null;
    }

    /**
     * Checks if this item has been deleted.
     * @return true if deleted, false otherwise
     */
    public boolean isDeleted() {
        return isUpdated() && newInput.length() == 0;
    }

    @Override
    public int hashCode() {

     */
    boolean isHidden() throws CIFSException;

    /**
     * Tests to see if the file this <code>SmbResource</code> represents is not a directory.
     *
     * @return <code>true</code> if this <code>SmbResource</code> is not a directory
     * @throws CIFSException if an error occurs accessing the resource
     */
    boolean isFile() throws CIFSException;

    /**

     * @return a list of WebConfig objects matching the criteria
     */
    public List<WebConfig> getAllWebConfigList(final boolean withLabelType, final boolean withRoleType, final boolean available,
            final List<String> idList) {
        return ComponentUtil.getComponent(WebConfigBhv.class).selectList(cb -> {
            if (available) {

            static final class AlwaysTrueFilter implements Predicate<PathType> {
                @Override
                public boolean test(PathType pathType) {
                    return true;
                }

                @Override
                public boolean equals(Object obj) {
                    return obj instanceof AlwaysTrueFilter;
                }

                @Override

    GcFinalization.awaitClear(ref);
  }

  public void testDefaultBehaviorOfPeekForEmptyIteration() {

    AbstractIterator<Integer> empty =
        new AbstractIterator<Integer>() {
          private boolean alreadyCalledEndOfData;

          @Override
          public @Nullable Integer computeNext() {
            if (alreadyCalledEndOfData) {
              fail("Should not have been invoked again");
            }

        final boolean result = sut.isMatchingProject(createMavenProject("maven-core"), selector, null);
        assertEquals(false, result);
    }

    @ParameterizedTest
    @ValueSource(strings = {":maven-core", "org.apache.maven:maven-core"})
    void isMatchingProjectMatchOnSelectorReturnsTrue(String selector) {