sourceId property
SourceID is a single-use card token from the payment form, for the token endpoint. It is vaulted as part of the charge, so a caller never holds card numbers and this service never sees one.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
String? sourceId;