handle method
Actual handling method. variables can be expected to be non-null as configured
Implementation
@override
Future<RequestCredential> handle(DidcommMessage message) async {
var offer = OfferCredential.fromJson(message.toJson());
var request = generateRequestCredentialMessageFromOffer(
offer: offer,
wallet: wallet!,
replyTo: replyTo!);
return request;
}