Returns a new CompletableFuture that is completed when any of the given CompletableFutures complete, with the same result. Otherwise, if it completed exceptionally, the returned CompletableFuture also does so, with a CompletionException holding this exception as its cause. If no CompletableFutures are provided, returns an incomplete CompletableFuture.

Parameters:

cfs

the CompletableFutures

Returns:  a new CompletableFuture that is completed with the result or exception of any of the given CompletableFutures when one completes

Exceptions:

NullPointerException

if the array or any of its elements are null