docs: @NonNull
      public static PaymentIntentParams createConfirmPaymentIntentWithPaymentMethodCreateParams(
              @Nullable PaymentMethodCreateParams paymentMethodCreateParams,
              @NonNull String clientSecret,
              @NonNull String returnUrl,
              boolean savePaymentMethod) {
          return new PaymentIntentParams()
                  .setPaymentMethodCreateParams(paymentMethodCreateParams)
                  .setClientSecret(clientSecret)
                  .setReturnUrl(returnUrl)
                  .setSavePaymentMethod(savePaymentMethod);
      }