code: public static IntStream buildRandomIntStream(int streamSize,
              int inclusiveLowerBound, int exclusiveUpperBound) {
          return buildRandomIntStream(streamSize, new Random(),
                  inclusiveLowerBound, exclusiveUpperBound);
      }
docs: Build random int stream int stream.
  
  @param streamSize          the stream size
  @param inclusiveLowerBound the inclusive lower bound
  @param exclusiveUpperBound the exclusive upper bound
  @return the int stream