ConfirmSetupIntentParams should have a constructor that doesn't require a PaymentMethod

[frewsxcv]

Right now, to confirm a SetupIntent with the SDK, one needs to provide either the ID of the PaymentMethod, or raw payment method details. It's possible for a SetupIntent to be created with a PaymentMethod, so supplying it during confirmation should be optional. This would match the optional param behavior in the API.

Relevant code:

stripe-android/stripe/src/main/java/com/stripe/android/model/ConfirmSetupIntentParams.kt

Lines 111 to 157 in 2e42c50

	companion object {
	/**
	* Create the parameters necessary for confirming a SetupIntent while attaching a
	* PaymentMethod that already exits.
	*
	* @param paymentMethodId the ID of the PaymentMethod that is being attached to the
	* SetupIntent being confirmed
	* @param clientSecret client secret from the SetupIntent being confirmed
	* @param returnUrl the URL the customer should be redirected to after the authorization process
	* @return params that can be use to confirm a SetupIntent
	*/
	@JvmStatic
	@JvmOverloads
	fun create(
	paymentMethodId: String,
	clientSecret: String,
	returnUrl: String? = null
	): ConfirmSetupIntentParams {
	return Builder(clientSecret)
	.setReturnUrl(returnUrl)
	.setPaymentMethodId(paymentMethodId)
	.build()
	}
	/**
	* Create the parameters necessary for confirming a SetupIntent with a new PaymentMethod
	*
	* @param paymentMethodCreateParams the params to create a new PaymentMethod that will be
	* attached to the SetupIntent being confirmed
	* @param clientSecret client secret from the SetupIntent being confirmed
	* @param returnUrl the URL the customer should be redirected to after the authorization
	* process
	* @return params that can be use to confirm a SetupIntent
	*/
	@JvmOverloads
	@JvmStatic
	fun create(
	paymentMethodCreateParams: PaymentMethodCreateParams,
	clientSecret: String,
	returnUrl: String? = null
	): ConfirmSetupIntentParams {
	return Builder(clientSecret)
	.setPaymentMethodCreateParams(paymentMethodCreateParams)
	.setReturnUrl(returnUrl)
	.build()
	}
	}

[mshafrir-stripe]

@frewsxcv thanks for filing!