billingDetails property
Default billing information of the customer.
Use this field to already prefill the customers billingDetails in the payment sheet. For example when you supply a country the country will be set on the payment sheet + alternative localization options. This does not set the billingDetails on the paymentIntent since the customer can change those.
Implementation
@JsonKey(name: 'defaultBillingDetails')
BillingDetails? get billingDetails => throw _privateConstructorUsedError;