How to zip more than 8 different types of mono

I'm trying to make 9 api calls at the same time. All of these calls would return different response objects. Before this we have 8 api calls and since these mono were different types, I used Mono.zip like below.

Mono<ResponseEntity<Service1Response>> monoService1 = callService1();
Mono<ResponseEntity<Service2Response>> monoService2 = callService2();
...
Mono<ResponseEntity<Service3Response>> monoService7 = callService7();
Mono<ResponseEntity<Service4Response>> monoService8 = callService8();

MixResponse mix = Mono.zip(monoService1, monoService2, monoService3, monoService4, monoService5, monoService6, monoService7, monoService8).flatMap(response -> {
  MixResponse mixResp = new MixResponse();
  mixResp.setResponse1(response.getT1().getBody());
  mixResp.setResponse2(response.getT2().getBody());
  mixResp.setResponse3(response.getT3().getBody());
  mixResp.setResponse4(response.getT4().getBody());
  mixResp.setResponse5(response.getT5().getBody());
  mixResp.setResponse6(response.getT6().getBody());
  mixResp.setResponse7(response.getT7().getBody());
  mixResp.setResponse8(response.getT8().getBody());
  return Mono.just(mixResp);
})).block();

but now we have one more service and Mono.zip supports only up to 8 monos. Is there anyway aside from Mono.zip that I could use in my situation? Sorry if this question looks dumb. I'm new in spring-webflux. Thanks in advance.

You could use Mono.zip that is taking Iterable as an argument and combinator function to combine results and casting to the specific type:

<R> Mono<R> zip(final Iterable<? extends Mono<?>> monos, Function<? super Object[], ? extends R> combinator)

List<Mono<? extends ResponseEntity<?>>> requests = List.of(
        monoService1, 
        monoService2, 
        monoService3, 
        monoService4
);

Mono.zip(requests, responses -> {
    MixResponse mixResp = new MixResponse();
    mixResp.setResponse1(((ResponseEntity<Service1Response>) responses[0]).getBody());
    mixResp.setResponse2(((ResponseEntity<Service2Response>) responses[1]).getBody());
    mixResp.setResponse3(((ResponseEntity<Service3Response>) responses[2]).getBody());
    mixResp.setResponse4(((ResponseEntity<Service4Response>) responses[3]).getBody());
    return mixResp;
});