如何在Flux<String>上执行flatMap()时获取索引号

import reactor.core.publisher.Flux;
import reactor.util.function.Tuple2;

Flux<String> flux = Flux.just("A", "B", "C", "D");

Flux<Tuple2<String, Integer>> indexedFlux = flux.zipWith(Flux.range(0, Integer.MAX_VALUE), Tuple2::of);

Flux<String> resultFlux = indexedFlux.flatMap(tuple -> {
    String value = tuple.getT1();
    int index = tuple.getT2();
    // 在这里可以根据索引号和值进行相应的处理
    // 返回一个新的Flux<String>对象
    return Flux.just(value + "-" + index);
});

resultFlux.subscribe(System.out::println);