diff --git a/src/ts/@overflow/commons/invoke/ServiceInvoker.ts b/src/ts/@overflow/commons/invoke/ServiceInvoker.ts
new file mode 100644
index 0000000..fb2508e
--- /dev/null
+++ b/src/ts/@overflow/commons/invoke/ServiceInvoker.ts
@@ -0,0 +1,12 @@
+export class ServiceInvoker {
+
+    private configMap: Map<string, string>;
+
+    public constructor() {
+        this.configMap = new Map();
+    }
+
+    public invoke(className: string, methodName: string): void {
+        return;
+    }
+}
diff --git a/src/ts/@overflow/commons/websocket/WebSocketRPC.ts b/src/ts/@overflow/commons/websocket/WebSocketRPC.ts
index a5bf32c..3087d9f 100644
--- a/src/ts/@overflow/commons/websocket/WebSocketRPC.ts
+++ b/src/ts/@overflow/commons/websocket/WebSocketRPC.ts
@@ -186,7 +186,7 @@ export default class WebSocketRPC {
 
   }
   private onNotificationHandler(notification: Notification): void {
-    //
+    // invoke
   }
 
   private fireOnDisconnect(): void {