code: public static IntStream buildRandomIntStream(int streamSize,
              IntSupplier randomIntSupplier) {
          return JMStream.increaseRange(streamSize)
                  .map(i -> randomIntSupplier.getAsInt());
      }
docs: Build random int stream int stream.
  
  @param streamSize        the stream size
  @param randomIntSupplier the random int supplier
  @return the int stream