private void addCredential(
     PathAddress parent, KeycloakAdapterConfigService service, String key, String value) {
   PathAddress credAddr =
       PathAddress.pathAddress(parent, PathElement.pathElement("credential", key));
   ModelNode credOp = new ModelNode();
   credOp.get(ModelDescriptionConstants.OP_ADDR).set(credAddr.toModelNode());
   ModelNode credential = new ModelNode();
   credential.get("value").set(value);
   service.addCredential(credOp, credential);
 }