Split Addition into Insertion and Append.
diff --git a/openstack/cdn/v1/services/requests_test.go b/openstack/cdn/v1/services/requests_test.go
index 99e2f53..e029d63 100644
--- a/openstack/cdn/v1/services/requests_test.go
+++ b/openstack/cdn/v1/services/requests_test.go
@@ -307,7 +307,7 @@
 			},
 			Index: 0,
 		},
-		Addition{
+		Append{
 			Value: Domain{Domain: "added.mocksite4.com"},
 		},
 	}