class Truck extends TransportVehicle {

  private int towingCapacity;

  public Truck(String manufacturer, String model, int loadCapacity, int towingCapacity) {
    super(manufacturer, model, loadCapacity);
    this.towingCapacity = towingCapacity;
  }

  // Overridden the toString method to specify the Vehicle object
  @Override
  public String toString() {<FILL_FUNCTION_BODY>}
}

    return "Truck{ "
            + super.toString()
            + ", "
            + "towingCapacity="
            + towingCapacity
            + '}';
  
<methods><variables>private int loadCapacity