diff --git a/lib/src/example_modules/httpInterfaceServer.ts b/lib/src/example_modules/httpInterfaceServer.ts
index b47b7be..8b39538 100644
--- a/lib/src/example_modules/httpInterfaceServer.ts
+++ b/lib/src/example_modules/httpInterfaceServer.ts
@@ -2,7 +2,7 @@ import type { Express } from "express";
 import express from "express";
 import { jsonization, types } from "@aas-core-works/aas-core3.0rc02-typescript";
 import AASInterfaceServer from "../server";
-import type { OnRequestCallback } from "../server";
+import type { OnRequestCallback, Request } from "types/requests";
 import AASStore from "../aasStore";
 
 type Config = {
@@ -11,7 +11,8 @@ type Config = {
 }
 
 export default class HTTPInterfaceServer extends AASInterfaceServer<Config> {
-    public name: string = "HTTPInterfaceServer";
+    protected name: string = "HTTPInterfaceServer";
+    protected supportsSubscriptions: boolean = false; // TODO, longpolling?
 
     private app: Express = express();
     private server: any = null;
@@ -22,10 +23,9 @@ export default class HTTPInterfaceServer extends AASInterfaceServer<Config> {
     }
 
     public prepare(): void {
-        const aas = AASStore.getInstance().getAll()[0];
         this.app.use(express.json());
         this.app.get("/aas", (_, res) => {
-            res.json(jsonization.toJsonable(aas));
+            res.json(jsonization.toJsonable(this.aas));
         });
     }
 
@@ -40,10 +40,13 @@ export default class HTTPInterfaceServer extends AASInterfaceServer<Config> {
     }
 
     public notify(event: any): void {
+        this.observers.forEach(observer => {
+            // TODO
+            // Notify long pollers
+        });
     }
-    
-    protected findElementByRequest(request: string): any | null {
-        throw new Error("Method not implemented.");
+
+    protected findElementByRequest(request: Request) {
+        
     }
-    
 }
\ No newline at end of file
diff --git a/lib/src/example_modules/mqttConnector.ts b/lib/src/example_modules/mqttConnector.ts
new file mode 100644
index 0000000..82598b7
--- /dev/null
+++ b/lib/src/example_modules/mqttConnector.ts
@@ -0,0 +1,55 @@
+import * as mqtt from "mqtt";
+import { Property, Operation, OperationVariable, BasicEventElement } from "@aas-core-works/aas-core3.0rc02-typescript/dist/types/types";
+import InterfaceConnectionObject from "interfaceConnectionObject";
+
+class MQTTConnector extends InterfaceConnectionObject<mqtt.IClientOptions> {
+    protected name: string = "MQTT Connector";
+    protected uriProtocol: string[] = ["mqtt", "mqtts"];
+    protected connectionType: "ON_DEMAND" | "PERMANENT" = "PERMANENT";
+    protected supportsSubscriptions: boolean = true;
+
+    private client: mqtt.MqttClient|null = null;
+
+    public connect(): boolean {
+        if (!this.client) this.client = mqtt.connect(this.config);
+        return this.client.connected;
+    }
+
+    public disconnect(): void {
+        if (this.client) this.client.end();
+        this.client = null;
+    }
+
+    public readProperty(prop: Property): void {
+        throw new Error("Method not implemented.");
+    }
+
+    public writeProperty(prop: Property, value: any): void {
+        throw new Error("Method not implemented.");
+    }
+
+    public observeProperty(prop: Property, callback: (value: any) => void): boolean {
+        throw new Error("Method not implemented.");
+    }
+
+    public callActionSync(action: Operation, args: OperationVariable[]) {
+        throw new Error("Method not implemented.");
+    }
+
+    public callActionAsync(action: Operation, args: OperationVariable[]): Promise<boolean> {
+        throw new Error("Method not implemented.");
+    }
+
+    public readAsyncActionResponse(action: Operation): Promise<any> {
+        throw new Error("Method not implemented.");
+    }
+
+    public subscribeEvent(callback: (event: BasicEventElement) => void): boolean {
+        throw new Error("Method not implemented.");
+    }
+
+    public unsubscribeEvent(): void {
+        throw new Error("Method not implemented.");
+    }
+
+}
\ No newline at end of file