private final ProgressListener progressListener;
    private final RequestBody delegate;

    public ProgressRequestBody(RequestBody delegate, ProgressListener progressListener) {
      this.delegate = delegate;
      this.progressListener = progressListener;
    }

    @Override
    public MediaType contentType() {
      return delegate.contentType();
    }

    @Override

        .addEqualityGroup(set2, wrap(set2))
        .testEquals();
  }

  private static <T> Set<T> wrap(Set<T> delegate) {
    return new ForwardingSet<T>() {
      @Override
      protected Set<T> delegate() {
        return delegate;
      }
    };
  }

@Deprecated(since = "4.0.0")
public class MavenToolchainsXpp3Reader {

    private final MavenToolchainsStaxReader delegate;

    public MavenToolchainsXpp3Reader() {
        delegate = new MavenToolchainsStaxReader();
    }

    public MavenToolchainsXpp3Reader(ContentTransformer contentTransformer) {
        delegate = contentTransformer != null
                ? new MavenToolchainsStaxReader(contentTransformer::transform)

        .addEqualityGroup(set2, wrap(set2))
        .testEquals();
  }

  private static <T> Multiset<T> wrap(Multiset<T> delegate) {
    return new ForwardingMultiset<T>() {
      @Override
      protected Multiset<T> delegate() {
        return delegate;
      }
    };
  }

    implements TestSetGenerator<E> {

  ReserializingTestSetGenerator(TestSetGenerator<E> delegate) {
    super(delegate);
  }

  public static <E> TestSetGenerator<E> newInstance(TestSetGenerator<E> delegate) {
    return new ReserializingTestSetGenerator<>(delegate);
  }

  @Override
  public Set<E> create(Object... elements) {
    return (Set<E>) super.create(elements);
  }

/**
 * An SSLSocketFactory that delegates calls. Sockets created by the delegate are wrapped with ones
 * that will not accept the [TLS_FALLBACK_SCSV] cipher, thus bypassing server-side fallback
 * checks on platforms that support it. Unfortunately this wrapping will disable any
 * reflection-based calls to SSLSocket from Platform.
 */
class FallbackTestClientSocketFactory(
  delegate: SSLSocketFactory,
) : DelegatingSSLSocketFactory(delegate) {

    }

    private static class LineItr implements Iterator<String> {
        private final Iterator<String> delegate;
        private int lastLineNumber;

        LineItr(Iterator<String> delegate) {
            this.delegate = delegate;
        }

        @Override
        public boolean hasNext() {
            return delegate.hasNext();
        }

        @Override
        public String next() {
            lastLineNumber++;

        .addEqualityGroup(list2, wrap(list2))
        .testEquals();
  }

  private static <T> List<T> wrap(List<T> delegate) {
    return new ForwardingList<T>() {
      @Override
      protected List<T> delegate() {
        return delegate;
      }
    };
  }

        .addEqualityGroup(set2, wrap(set2))
        .testEquals();
  }

  private static <T> SortedMultiset<T> wrap(SortedMultiset<T> delegate) {
    return new ForwardingSortedMultiset<T>() {
      @Override
      protected SortedMultiset<T> delegate() {
        return delegate;
      }
    };
  }

        .addEqualityGroup(list2, wrap(list2))
        .testEquals();
  }

  private static <T> List<T> wrap(List<T> delegate) {
    return new ForwardingList<T>() {
      @Override
      protected List<T> delegate() {
        return delegate;
      }
    };
  }