}

    @Override
    public boolean add(E e) {
      synchronized (mutex) {
        return delegate().add(e);
      }
    }

    @Override
    public boolean addAll(Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(c);
      }
    }

    @Override
    public void clear() {
      synchronized (mutex) {

    /**
     * Constructs a new DefaultResponseProcessor.
     */
    public DefaultResponseProcessor() {
        // Default constructor
    }

    /**
     * Processes response data based on HTTP status code and configured transformer.
     *
     * @param responseData the response data to process
     */
    @Override
    public void process(final ResponseData responseData) {
        if (isNotModified(responseData)) {

        }

        @Override
        public String getName() {
            return name;
        }

        @Override
        public int getType() {
            return 0;
        }

        @Override
        public int getAttributes() {
            return 0;
        }

        @Override
        public long createTime() {
            return 0;
        }

        return new ProblemCollector<>() {
            @Override
            public boolean problemsOverflow() {
                return false;
            }

            @Override
            public int problemsReportedFor(BuilderProblem.Severity... severities) {
                return 0;
            }

            @Override
            public boolean reportProblem(P problem) {

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@NullMarked
public class MultimapPutTester<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimapTester<K, V, Multimap<K, V>> {
  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testPutUnsupported() {
    assertThrows(UnsupportedOperationException.class, () -> multimap().put(k3(), v3()));
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutEmpty() {

 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *

        }
    }

    @Override
    public boolean isAvailable() {
        try {
            return storage.get(bucket) != null;
        } catch (final Exception e) {
            return false;
        }
    }

    @Override
    public void close() {
        // GCS Storage client doesn't require explicit close

    }

    @Override
    public File getPomFile() {
        return pomFile;
    }

    @Override
    public DefaultModelBuildingRequest setPomFile(File pomFile) {
        this.pomFile = (pomFile != null) ? pomFile.getAbsoluteFile() : null;

        return this;
    }

    @Override
    public synchronized ModelSource getModelSource() {

    public E getLast() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.getLast();
    }

    @Override
    public @Nullable E peekFirst() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.peekFirst();
    }

    @Override
    public @Nullable E peekLast() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.peekLast();
    }

    @Override

    // for testing SortedSet and SortedMap methods
    public static final String BEFORE_FIRST = "\0";
    public static final String BEFORE_FIRST_2 = "\0\0";
    public static final String MIN_ELEMENT = "a";
    public static final String AFTER_LAST = "z";
    public static final String AFTER_LAST_2 = "zz";
  }

  public static class Chars extends SampleElements<Character> {
    public Chars() {