<?php  namespace App\Services\Orders\Shipping;  use App\Services\Orders\MathMoneyOperations;  class ShippingReturnObject { 	private int $numberOfPackages; 	private string $shippingPrice; 	private ?string $note;  	public function __construct(int $numberOfPackages = 0, string $shippingPrice = '0.00', ?string $note = null){}  	public function increasePrice(int|float $amount): void{}  	public function getPrice(): string{}  	public function getNumberOfPackages(): int{}  	public function getNote(): string{} }