如何在Swift-3中将soap对象从一个视图控制器传递到另一个视图控制器

class SoapObject {
    var property1: String
    var property2: Int
    
    init(property1: String, property2: Int) {
        self.property1 = property1
        self.property2 = property2
    }
}

class SourceViewController: UIViewController {
    var soapObject: SoapObject?
    
    // 在某个方法中将soap对象赋值
    func passSoapObject() {
        let soap = SoapObject(property1: "value1", property2: 2)
        soapObject = soap
    }
    
    // 在切换到目标视图控制器之前，将soap对象传递给目标视图控制器
    func navigateToDestinationViewController() {
        let destinationVC = DestinationViewController()
        destinationVC.soapObject = soapObject
        navigationController?.pushViewController(destinationVC, animated: true)
    }
}

class DestinationViewController: UIViewController {
    var soapObject: SoapObject?
    
    // 在需要使用soap对象的地方进行操作
    func useSoapObject() {
        if let soap = soapObject {
            // 使用soap对象的属性和方法
            print(soap.property1)
            print(soap.property2)
        }
    }
}