How to use the @serenity-js/local-server.StartLocalServer.onRandomPort function in @serenity-js/local-server

Before(function () {
    return this.stage.theActorCalled('Apisitt').attemptsTo(                     // todo: change to Maggie
        StartLocalServer.onRandomPort(),
        ChangeApiUrl.to(LocalServer.url()),
        // TakeNote.of(LocalServer.url())               // Question or Question; Pass between actors
    );
});

        beforeEach(() => Sid.attemptsTo(StartLocalServer.onRandomPort()));
        afterEach(() => Sid.attemptsTo(StopLocalServer.ifRunning()));

When(/^(.*) navigates to the test website$/, function(this: WithStage, actorName: string) {
    return this.stage.actor(actorName).attemptsTo(
        StartLocalServer.onRandomPort(),
        UseAngular.disableSynchronisation(),
        Navigate.to(LocalServer.url()),
    );
});