code: public void incrementCount1D(K o, double count) {
      if (depth > 1) {
        wrongDepth();
      }
  
      addToTotal(count);
  
      if (tempMDouble == null) {
        tempMDouble = new MutableDouble();
      }
      tempMDouble.set(count);
      MutableDouble oldMDouble = (MutableDouble) map.put(o, tempMDouble);
  
      if (oldMDouble != null) {
        tempMDouble.set(count + oldMDouble.doubleValue());
      }
  
      tempMDouble = oldMDouble;
  
    }
docs: Equivalent to <code>{@link #incrementCount}({o}, count)</code>;
  only works for a depth 1 GeneralizedCounter.