docs: public static int wiringPiISR(int pin, int edgeType, GpioInterruptCallback callback){
          // if there is not collection in the array at this pin location, then initialize an array list
          if(isrCallbacks[pin] == null){
              isrCallbacks[pin] = new ArrayList<>();
          }
  
          // add provided callback interface to ISR callbacks collection
          isrCallbacks[pin].add(callback);
          return _wiringPiISR(pin, edgeType);
      }