Moving from springboot java to kotlin and http4k.

I found

    fun provideOauthClient(
    @Named("baseHttp") baseHttp: @JvmSuppressWildcards Function1<Request, Response>,
    @Named(OAUTH_CLIENT_ID) clientId: String,
    @Named(OAUTH_CLIENT_SECRET) clientSecret: String): @JvmSuppressWildcards HttpHandler {
    val clientCredentials = Credentials(clientId, clientSecret)
    val handler =   ClientFilters.RefreshingOAuthToken(
        oauthCredentials = clientCredentials,
        tokenUri = Uri.of("/token"),
        backend = baseHttp,
        oAuthFlowFilter = ClientFilters.OAuthClientCredentials(clientCredentials),
        gracePeriod = Duration.ofSeconds(1) ,
    ).then(baseHttp)

now I would like to expose a route that returns to the caller the jwt generated from RefreshingOAuthToken. On SpringBoot I managed using ReactiveOAuth2AuthorizedClientManager. Is there an equivalent for http4k?