public function boot(): void 	{ 		$this->adjustDbSettings(); 		$this->bindConfigs();  		$this->app->bind(ShippingCalculationService::class, function ($app) { 			return new ShippingCalculationService(new DeliveryPrice, Address::$homeCountry); 		});  		$this->app->bind(ServeMainMenuInterface::class, ServeMainMenu::class);  		$this->app->bind(ExtraShippingCosts::class, function ($app) { 			return new ExtraShippingCosts(new Category, setting('shipping_extra_costs_value') ?? 0); 		}); 	}