diff --git a/src/ts/@overflow/discovery/api/service/DiscoveryService.ts b/src/ts/@overflow/discovery/api/service/DiscoveryService.ts
new file mode 100644
index 0000000..95fa6d0
--- /dev/null
+++ b/src/ts/@overflow/discovery/api/service/DiscoveryService.ts
@@ -0,0 +1,12 @@
+
+export class DiscoveryService {
+    // tslint:disable-next-line:no-empty
+    public constructor() {
+    }
+
+    public done(): void {
+        console.log('Discovery has finished.');
+        // state change test
+    }
+
+}