assertEquals("bootstrap", RequestTrace.CONTEXT_BOOTSTRAP);
    }

    @Test
    void testNullValues() {
        RequestTrace trace = new RequestTrace(null, null, null);
        assertNull(trace.context());
        assertNull(trace.parent());
        assertNull(trace.data());
    }

    @Test
    void testChainedTraces() {
        RequestTrace root = new RequestTrace("root", null, "root-data");

			Key:   "trace",
			Value: slog.GroupValue(fields...),
		})

	case l.SlowThreshold != 0 && elapsed > l.SlowThreshold:
		l.log(ctx, slog.LevelWarn, "SQL executed", slog.Attr{
			Key:   "trace",
			Value: slog.GroupValue(fields...),
		})

	case l.LogLevel >= Info:
		l.log(ctx, slog.LevelInfo, "SQL executed", slog.Attr{
			Key:   "trace",
			Value: slog.GroupValue(fields...),
		})
	}

        public ArtifactFactoryRequestBuilder session(Session session) {
            this.session = session;
            return this;
        }

        public ArtifactFactoryRequestBuilder trace(RequestTrace trace) {
            this.trace = trace;
            return this;
        }

        public ArtifactFactoryRequestBuilder groupId(String groupId) {
            this.groupId = groupId;
            return this;
        }

            RequestTrace trace,
            RepositorySystem resolver,
            RemoteRepositoryManager remoteRepositoryManager,
            List<RemoteRepository> repositories,
            ProjectBuildingRequest.RepositoryMerging repositoryMerging,
            ReactorModelPool modelPool) {
        this.session = session;
        this.trace = trace;
        this.resolver = resolver;

	l := lru.NewLRU[int64, int64](8192, nil, 0)

	trace := make([]int64, b.N*2)
	for i := 0; i < b.N*2; i++ {
		if i%2 == 0 {
			trace[i] = getRand(b) % 16384
		} else {
			trace[i] = getRand(b) % 32768
		}
	}

	b.ResetTimer()

	for i := 0; i < b.N; i++ {
		l.Add(trace[i], trace[i])
	}
	var hit, miss int
	for i := 0; i < b.N; i++ {
		if _, ok := l.Get(trace[i]); ok {
			hit++
		} else {
			miss++

        public ArtifactFactoryRequestBuilder session(Session session) {
            this.session = session;
            return this;
        }

        public ArtifactFactoryRequestBuilder trace(RequestTrace trace) {
            this.trace = trace;
            return this;
        }

        public ArtifactFactoryRequestBuilder groupId(String groupId) {
            this.groupId = groupId;
            return this;
        }

	if opts.Trace == nil {
		opts.Trace = func(msg string) {} // Noop if not defined.
	}

	// Unix listener with special TCP options.
	listenCfg := net.ListenConfig{
		Control: setTCPParametersFn(opts),
	}

	for i, serverAddr := range serverAddrs {
		l, e := listenCfg.Listen(ctx, "tcp", serverAddr)
		if e != nil {
			opts.Trace("listenCfg.Listen: " + e.Error())

            this.session = session;
            return this;
        }

        @Nonnull
        public ArtifactInstallerRequestBuilder trace(RequestTrace trace) {
            this.trace = trace;
            return this;
        }

        @Nonnull
        public ArtifactInstallerRequestBuilder artifacts(@Nullable Collection<ProducedArtifact> artifacts) {
            this.artifacts = artifacts != null ? artifacts : Collections.emptyList();

            this.session = session;
            return this;
        }

        public DependencyCoordinatesFactoryRequestBuilder trace(RequestTrace trace) {
            this.trace = trace;
            return this;
        }

        public DependencyCoordinatesFactoryRequestBuilder groupId(String groupId) {
            this.groupId = groupId;
            return this;

            RepositorySystemSession session,
            RequestTrace trace,
            Metadata metadata,
            ArtifactRepository repository,
            Exception exception) {
        RepositoryEvent.Builder event = new RepositoryEvent.Builder(session, EventType.METADATA_INVALID);
        event.setTrace(trace);
        event.setMetadata(metadata);
        event.setException(exception);