docs: public void incrementCount(List<K> l, K o, double count) {
      if (l.size() != depth - 1) {
        wrongDepth();
      }
  
      GeneralizedCounter<K> next = this;
      for (K o2: l) {
        next.addToTotal(count);
        next = next.conditionalizeHelper(o2);
      }
      next.addToTotal(count);
  
      next.incrementCount1D(o, count);
    }