public static <T>ParallelPublisher<T> from(Publisher<? extends T> source,boolean ordered,int parallelism){
  return from(source,ordered,parallelism,Px.bufferSize(),Px.defaultQueueSupplier(Px.bufferSize()));
}

public static < T > ParallelPublisher < T > from ( Publisher < ? extends T > source , boolean ordered , int parallelism ) { return from ( source , ordered , parallelism , Px . bufferSize ( ) , Px . defaultQueueSupplier ( Px . bufferSize ( ) ) ) ; }
take a publisher and prepare to consume it on parallallism number of ' rails ' , possibly ordered and round - robin fashion .
