<?php  namespace App\Services\Payments;  class CorvusPayHandler { 	private ?string $version; 	private ?string $store_id; 	private ?string $currency; 	private ?string $secret_key; 	private ?string $require_complete;  	public function __construct(?string $version = null, ?string $store_id = null, ?string $currency = null, ?string $secret_key = null, ?string $require_complete = null){}  	public function calculateFormSignature(string $orderNumber, string $cart, float $amount, string $lang): string|false{}  	public function calculateWebhookSignature(string $orderNumber, string $language, string $approvalCode): string|false{} }