docs: public void sampleSequenceRepeatedly(SequenceModel model, int[] sequence, int numSamples) {
      sequence = copy(sequence); // so we don't change the initial, or the one we just stored
      listener.setInitialSequence(sequence);
      for (int iter=0; iter<numSamples; iter++) {
        sampleSequenceForward(model, sequence);
      }
    }