}

    public WellKnownClassLoaderRegistry(PayloadClassLoaderRegistry delegate) {
        this.delegate = delegate;
    }

    @Override
    public SerializeMap newSerializeSession() {
        final SerializeMap delegateSession = delegate.newSerializeSession();
        return new SerializeMap() {
            final Map<Short, ClassLoaderDetails> knownLoaders = new HashMap<>();

            @Override

 */
@ThreadSafe
public interface PayloadClassLoaderRegistry {
    /**
     * Starts serializing an object graph.
     * The returned value is not required to be thread-safe.
     */
    SerializeMap newSerializeSession();

    /**
     * Starts deserializing an object graph.
     * The returned value is not required to be thread-safe.
     */
    DeserializeMap newDeserializeSession();

        if (payload == null) {
            return new SerializedPayload(null, Collections.<byte[]>emptyList());
        }

        final SerializeMap map = classLoaderRegistry.newSerializeSession();
        try {
            StreamByteBuffer buffer = new StreamByteBuffer();
            final ObjectOutputStream objectStream = new PayloadSerializerObjectOutputStream(buffer.getOutputStream(), map);

        this.cache = cache;
        this.classLoaderFactory = payloadClassLoaderFactory;
    }

    @Override
    public SerializeMap newSerializeSession() {
        return new SerializeMap() {
            final Map<ClassLoader, Short> classLoaderIds = new HashMap<>();
            final Map<Short, ClassLoaderDetails> classLoaderDetails = new HashMap<>();

        this.delegate = delegate;
        this.classpathInferer = classpathInferer;
        this.classLoaderCache = classLoaderCache;
    }

    @Override
    public SerializeMap newSerializeSession() {
        final Set<ClassLoader> candidates = new LinkedHashSet<>();
        final Set<URI> classPath = new LinkedHashSet<>();
        final Map<ClassLoader, Short> classLoaderIds = new HashMap<>();

            return description;
        }
    }

    private static class TestClassLoaderRegistry implements PayloadClassLoaderRegistry {
        @Override
        public SerializeMap newSerializeSession() {
            throw new UnsupportedOperationException();
        }

        @Override
        public DeserializeMap newDeserializeSession() {
            return (classLoaderDetails, className) -> {