Headless mobile v2.16 to v2.17

import UIKit
// 👇 Import the SDK
import PrimerSDK
class ViewController: UIViewController {
        // ...
        var availablePaymentMethods: [PrimerHeadlessUniversalCheckout.PaymentMethod]?
    override func viewDidLoad() {
        super.viewDidLoad()
                // ...
                // 👇 Start Headless Universal Checkout with your session's client token
        PrimerHeadlessUniversalCheckout.current.start(withClientToken: clientToken, delegate: self) { availablePaymentMethods, err in
            if let err = err {
                // Handle error
            } else if let availablePaymentMethods = availablePaymentMethods {
                // Payment methods that are available for this session
                self.availablePaymentMethods = availablePaymentMethods
            }
        }
    }
}
extension ViewController: PrimerHeadlessUniversalCheckoutDelegate {
        // 👇 [Required] This function will return the checkout data once the payment is finished
    func primerHeadlessUniversalCheckoutDidCompleteCheckoutWithData(_ data: PrimerCheckoutData) {
    }
}

extension UIViewController: UITableViewDataSource, UITableViewDelegate {
  func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return self.paymentMethods.count
  }
  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let paymentMethod = self.paymentMethods[indexPath.row]
    let cell = tableView.dequeueReusableCell(withIdentifier: "MerchantPaymentMethodCell", for: indexPath) as! MerchantPaymentMethodCell
    cell.configure(paymentMethodType: paymentMethod)
    // Primer SDK can provide you with Payment Method buttons that follow
    // the payment methods UI guidelines.
    // Example given for Apple Pay payment method
    // https://developer.apple.com/design/human-interface-guidelines/technologies/apple-pay/introduction
    // let paymentMethodButton = PrimerHeadlessUniversalCheckout.makeButton(for: paymentMethod)
    return cell
  }
  func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    // The user has selected a payment method
  }
}

do {
        let paymentMethodAsset = try PrimerHeadlessUniversalCheckout.AssetsManager.getPaymentMethodAsset(for: paymentMethod.paymentMethodType)
} catch {
        // Handle error
}

import UIKit
import PrimerSDK
class ViewController: UIViewController {
    // ...
    @IBAction func paymentMethodButtonTapped(_ sender: UIButton) {
        do {
            // 👇 Create the payment method manager
            let nativeUIPaymentMethodManager = try PrimerHeadlessUniversalCheckout.NativeUIManager(paymentMethodType: paymentMethod.paymentMethodType)
            // 👇 Show the payment method
            try nativeUIPaymentMethodManager.showPaymentMethod(intent: .checkout)
        } catch {
            // Handle error
        }
    }
}

PrimerHeadlessUniversalCheckout.current.start(..., uiDelegate: self, ...)

const settings: PrimerSettings = {
    // Any other settings & callbacks (see the Quick Start Guide
    // and the SDK API reference)
    onAvailablePaymentMethodsLoad: onAvailablePaymentMethodsLoad,
    onPrepareStart: onPrepareStart,
    onPaymentMethodShow: onPaymentMethodShow,
    onTokenizeStart: onTokenizeStart,
    onCheckoutComplete: onCheckoutComplete,
}

import { HeadlessUniversalCheckout } from '@primer-io/react-native';
export const HeadlessUniversalCheckoutScreen = () => {
        useEffect(() => {
                const settings: PrimerSettings = {
                        //...
                        headlessUniversalCheckoutCallbacks: {
                                onCheckoutComplete: (checkoutData) => {
                            // Here you will receive the checkout data of the payment.
                        }
                        }
                }
            const availablePaymentMethods = await HeadlessUniversalCheckout.startWithClientToken(clientToken, settings);
            // Store the available payment methods for the session.
        }, [clientToken]);
}

const getPaymentMethodAssets = (): Promise<Asset[]> => {
    const assetsManager = new AssetsManager()
    const assets: Asset[] = await assetsManager.getPaymentMethodAssets()
    return assets
}

const payWithPaymentMethod = async (paymentMethodType: string) => {
    const nativeUIManager = new NativeUIManager()
    await nativeUIManager.configure({ paymentMethodType: paymentMethod.paymentMethodType })
    await nativeUIManager.showPaymentMethod(SessionIntent.CHECKOUT)
}

const rawDataManager = new RawDataManager();
const initialize = async (paymentMethod: PaymentMethod) => {
    await rawDataManager.configure({
        paymentMethodType: paymentMethod.paymentMethodType,
        onMetadataChange: (data => {
            // For example card number detected to be Visa
        }),
        onValidation: ((isVallid, errors) => {
            // Show on your UI if the card data aren't valid
        })
    });
    const requiredInputElementTypes = await rawDataManager.getRequiredInputElementTypes();
    setRequiredInputElementTypes(requiredInputElementTypes);
}
// ....
// Build your own Pay button and call "submit"
const pay = async () => {
    await rawDataManager.submit();
}