code: public Object saveState(FacesContext context) {
  
          if (context == null) {
              throw new NullPointerException();
          }
          if (!initialStateMarked()) {
              Object values[] = new Object[2];
              values[0] = maximum;
              values[1] = minimum;
              return (values);
          }
          return null;
  
      }
docs: ----------------------------------------------------- StateHolder Methods