ensureAccountPEMKeyPair method
Ensures that an account key pair exists.
Implementation
Future<PEMKeyPair> ensureAccountPEMKeyPair() async {
var keyPair = await getAccountPEMKeyPair();
keyPair ??= await generateAccountPEMKeyPair();
if (keyPair == null) {
throw StateError("Can't generate account key pair.");
}
return keyPair;
}