code: public int getCount(Object o) {
      int[] nums = (int[]) cset.get(o);   
      if (nums == null ) {
        return(0);
      }
      else {
        return(nums[0]);
      }
    }
docs: Return the count of the specified object.
  @param o the object whose count needs to be determined.
  @return the count of the specified object.