func main() {
	baseCtx := context.Background()

	// Create a task that starts and ends entirely outside of the trace.
	ctx0, t0 := trace.NewTask(baseCtx, "parent")

	// Create a task that starts before the trace and ends during the trace.
	ctx1, t1 := trace.NewTask(ctx0, "type1")

	// Start tracing.
	if err := trace.Start(os.Stdout); err != nil {
		log.Fatalf("failed to start tracing: %v", err)
	}
	t1.End()

}

void ClusterScopingPassImpl::AddScopeToAllTransitivePredecessors(Node* start) {
  const string unique_suffix = absl::StrCat("_", GetUniqueScopeId());

  std::vector<Node*> starts;
  starts.push_back(start);
  auto enter = [&](Node* n) { AddOrAppendXlaInternalScope(n, unique_suffix); };
  ReverseDFSFrom(*graph_, starts, enter, /*leave=*/nullptr,
                 /*stable_comparator=*/NodeComparatorName());
}

	EvProcStart         = 5  // start of P [timestamp, thread id]
	EvProcStop          = 6  // stop of P [timestamp]
	EvGCStart           = 7  // GC start [timestamp, seq, stack id]
	EvGCDone            = 8  // GC done [timestamp]
	EvSTWStart          = 9  // GC mark termination start [timestamp, kind]
	EvSTWDone           = 10 // GC mark termination done [timestamp]

These functions can be declared with `async def` or normal `def`.

### `startup` event

To add a function that should be run before the application starts, declare it with the event `"startup"`:

```Python hl_lines="8"
{!../../../docs_src/events/tutorial001.py!}
```

    delegate.enqueue(response.wrap())
  }

  @Throws(IOException::class)
  @JvmOverloads
  fun start(port: Int = 0) {
    started = true
    delegate.start(port)
  }

  @Throws(IOException::class)
  fun start(
    inetAddress: InetAddress,
    port: Int,
  ) {
    started = true
    delegate.start(inetAddress, port)
  }

  @Synchronized
  @Throws(IOException::class)
  fun shutdown() {

                    // Once the root build starts configuring, we are in Configuring phase
                    phaseStarted(startEvent, Phase.Configuring);
                } else if (startEvent.getBuildOperationCategory() == BuildOperationCategory.CONFIGURE_BUILD && currentPhase == Phase.Configuring) {
                    // Any configuring event received from nested or buildSrc builds before the root build starts configuring is ignored

	stats, err := http.DoHTTPGetWithTimeout(activeConnectionsURL, 2*time.Second)
	if err != nil {
		return -1, fmt.Errorf("unable to get listener stats from Envoy : %v", err)
	}
	if stats.Len() == 0 {
		return -1, nil
	}
	activeConnections := 0
	for stats.Len() > 0 {
		line, _ := stats.ReadString('\n')
		parts := strings.Split(line, ":")
		if len(parts) != 2 {

 * <p>Implementations must allow concurrent sessions.
 */
@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.
     */

	b11.Event("GoStop", "whatever", testgen.NoStack)

	g2 := t.Generation(2)

	// Start running the goroutine, but later.
	b21 := g2.Batch(trace.ThreadID(1), 3)
	b21.Event("ProcStatus", trace.ProcID(1), go122.ProcRunning)
	b21.Event("GoStart", trace.GoID(1), testgen.Seq(2))

	// The goroutine starts running, then stops, then starts again.
	b20 := g2.Batch(trace.ThreadID(0), 5)

		TLSCertFile: tlsCert,
		TLSKeyFile:  tlsKey,
	}

	return server, server.Start()
}

// Start starts the mock server.
func (ms *MockOpenIDDiscoveryServer) Start() error {
	var handler http.Handler
	router := mux.NewRouter()
	router.HandleFunc("/.well-known/openid-configuration", ms.openIDCfg).Methods("GET")
	router.HandleFunc("/oauth2/v3/certs", ms.jwtPubKey).Methods("GET")
	handler = router
	if ms.timeout != 0 {