The patterns used by [ServeMux] allow multiple spaces matching

	router := http.NewServeMux()
	installReady, watchReady = initRouter(router)

	go func() {
		_ = http.ListenAndServe(":"+constants.ReadinessPort, router)
	}()

	return
}

func initRouter(router *http.ServeMux) (installReady *atomic.Value, watchReady *atomic.Value) {
	installReady = &atomic.Value{}
	watchReady = &atomic.Value{}
	installReady.Store(false)
	watchReady.Store(false)

This behavior is controlled by the `httplaxcontentlength` setting.

Go 1.22 changed the behavior of ServeMux to accept extended
patterns and unescape both patterns and request paths by segment.
This behavior can be controlled by the
[`httpmuxgo121` setting](/pkg/net/http/#ServeMux).

Go 1.22 added the [Alias type](/pkg/go/types#Alias) to [go/types](/pkg/go/types)

<h3 id="enhanced_routing_patterns">Enhanced routing patterns</h3>

<p><!-- https://go.dev/issue/61410 -->
  HTTP routing in the standard library is now more expressive.
  The patterns used by <a href="/pkg/net/http#ServeMux"><code>net/http.ServeMux</code></a> have been enhanced to accept methods and wildcards.
</p>

<p>
  Registering a handler with a method, like <code>"POST /items/create"</code>, restricts

* genericapiserver: extract CA cert from server cert and SNI cert chains ([#39022](https://github.com/kubernetes/kubernetes/pull/39022), [@sttts](https://github.com/sttts))
* genericapiserver: turn APIContainer.SecretRoutes into a real ServeMux ([#38826](https://github.com/kubernetes/kubernetes/pull/38826), [@sttts](https://github.com/sttts))

pkg net/http, method (*Response) ProtoAtLeast(int, int) bool
pkg net/http, method (*Response) Write(io.Writer) error
pkg net/http, method (*ServeMux) Handle(string, Handler)
pkg net/http, method (*ServeMux) HandleFunc(string, func(ResponseWriter, *Request))
pkg net/http, method (*ServeMux) ServeHTTP(ResponseWriter, *Request)
pkg net/http, method (*Server) ListenAndServe() error

pkg net/http, const TimeFormat = "Mon, 02 Jan 2006 15:04:05 GMT"
pkg net/http, func ParseTime(string) (time.Time, error)
pkg net/http, method (*Request) PostFormValue(string) string
pkg net/http, method (*ServeMux) Handler(*Request) (Handler, string)
pkg net/http, method (*Transport) CancelRequest(*Request)
pkg net/http, type CloseNotifier interface { CloseNotify }
pkg net/http, type CloseNotifier interface, CloseNotify() <-chan bool