code: public static <T> ContinuableFuture<T> anyOf(final Collection<? extends Future<? extends T>> cfs) {
          return anyOf2(cfs);
      }
docs: Returns a new Future that, when any of the given Futures complete normally.
  If all of the given Futures complete exceptionally, then the returned Future also does so.
  
  @param cfs
  @return