code: @Override
      public void setPercentValue(GpioPinAnalogOutput pin, Number percent){
          setPercentValue(pin.getPin(), percent);
      }
docs: Set the current analog value as a percentage of the available range instead of a raw value.
  Thr framework will automatically convert the percentage to a scaled number in the ADC's value range.
  
  @return percentage value between 0 and 100.