color: var(--color-text);
    /* font-size: 18px; */
    font-size: 15px;
    /* font-family: 'Fira Mono', Consolas, Menlo, Monaco, 'Courier New', Courier, monospace; */
    font-family: 'Roboto Mono', 'Fira Mono', Consolas, Menlo, Monaco, 'Courier New', Courier, monospace;
    border-radius: 4px;
    padding: 75px 45px 35px;
    position: relative;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;

```Python hl_lines="35"
{!../../../docs_src/openapi_callbacks/tutorial001.py!}
```

!!! tip
    Notice that you are not passing the router itself (`invoices_callback_router`) to `callback=`, but the attribute `.routes`, as in `invoices_callback_router.routes`.

### Check the docs

	for {
		select {
		case err := <-globalHTTPServerErrorCh:
			shutdownLogIf(context.Background(), err)
			exit(stopProcess())
		case osSignal := <-globalOSSignalCh:
			logger.Info("Exiting on signal: %s", strings.ToUpper(osSignal.String()))
			daemon.SdNotify(false, daemon.SdNotifyStopping)
			exit(stopProcess())
		case signal := <-globalServiceSignalCh:
			switch signal {
			case serviceRestart:

type stsAPIHandlers struct{}

// registerSTSRouter - registers AWS STS compatible APIs.
func registerSTSRouter(router *mux.Router) {
	// Initialize STS.
	sts := &stsAPIHandlers{}

	// STS Router
	stsRouter := router.NewRoute().PathPrefix(SlashSeparator).Subrouter()

	// Assume roles with no JWT, handles AssumeRole.

          }
        };
    final ImmutableRangeMap<K, V> outer = this;
    return new ImmutableRangeMap<K, V>(subRanges, values.subList(lowerIndex, upperIndex)) {
      @Override
      public ImmutableRangeMap<K, V> subRangeMap(Range<K> subRange) {
        if (range.isConnected(subRange)) {
          return outer.subRangeMap(subRange.intersection(range));
        } else {

That means that, for example, to apply authentication to all the *path operations* in a router it would end up being done in a different file, instead of keeping related logic together.

	rootCmd.Flags().Bool(name, value, usage)
	registerEnvironment(name, value, usage)
}

func registerEnvironment[T env.Parseable](name string, defaultValue T, usage string) {
	envName := strings.Replace(strings.ToUpper(name), "-", "_", -1)
	// Note: we do not rely on istio env package to retrieve configuration. We relies on viper.
	// This is just to make sure the reference doc tool can generate doc with these vars as env variable at istio.io.

func registerAPIFunctions(muxRouter *mux.Router, objLayer ObjectLayer, apiFunctions ...string) {
	if len(apiFunctions) == 0 {
		// Register all api endpoints by default.
		registerAPIRouter(muxRouter)
		return
	}
	// API Router.
	apiRouter := muxRouter.PathPrefix(SlashSeparator).Subrouter()
	// Bucket router.
	bucketRouter := apiRouter.PathPrefix("/{bucket}").Subrouter()

   * smaller). For example, partitioning an iterator containing {@code [a, b, c, d, e]} with a
   * partition size of 3 yields {@code [[a, b, c], [d, e]]} -- an outer iterator containing two
   * inner lists of three and two elements, all in the original order.
   *
   * <p>The returned lists implement {@link java.util.RandomAccess}.
   *

   *
   * <p>Elements appear in these subsets in the same iteration order as they appeared in the input
   * set. The order in which these subsets appear in the outer set is undefined. Note that the power
   * set of the empty set is not the empty set, but a one-element set containing the empty set.
   *