for (int i = 0; i < numberOfModifications; i++) {
      if (random.nextBoolean()) {
        /* insert a new element */
        int randomInt = random.nextInt();
        mmHeap.offer(randomInt);
        insertIntoReplica(replica, randomInt);
        currentHeapSize++;
      } else {
        /* remove either min or max */
        if (random.nextBoolean()) {
          removeMinFromReplica(replica, mmHeap.poll());

        }
      };

  enum RandomHasherAction {
    PUT_BOOLEAN() {
      @Override
      void performAction(Random random, Iterable<? extends PrimitiveSink> sinks) {
        boolean value = random.nextBoolean();
        for (PrimitiveSink sink : sinks) {
          sink.putBoolean(value);
        }
      }
    },
    PUT_BYTE() {
      @Override