public <U>SimpleReactStream<U> fromStream(final Stream<CompletableFuture<U>> stream){
  final Stream s=stream;
  return construct(s);
}

public < U > SimpleReactStream < U > fromStream ( final Stream < CompletableFuture < U > > stream ) { final Stream s = stream ; return construct ( s ) ; }
start a reactive dataflow from a stream of completablefutures .
