public static CompletionStage combine()

in src/main/java/com/spotify/futures/CompletableFutures.java [580:588]


  public static <T> CompletionStage<T> combine(
          Function<CombinedFutures, T> function, List<? extends CompletionStage<?>> stages) {
    @SuppressWarnings("unchecked") // generic array creation
    final CompletableFuture<?>[] all = new CompletableFuture[stages.size()];
    for (int i = 0; i < stages.size(); i++) {
      all[i] = stages.get(i).toCompletableFuture();
    }
    return CompletableFuture.allOf(all).thenApply(ignored -> function.apply(new CombinedFutures(stages)));
  }