diff --git a/packages/daf-core/src/identity/abstract-identity-controller.ts b/packages/daf-core/src/identity/abstract-identity-controller.ts
index 4edbcaa24..e10f7019b 100644
--- a/packages/daf-core/src/identity/abstract-identity-controller.ts
+++ b/packages/daf-core/src/identity/abstract-identity-controller.ts
@@ -23,6 +23,10 @@ export abstract class AbstractIdentityController {
     return Promise.reject('Method removePublicKey not implemented')
   }
 
+  /**
+   *
+   * @param service ServiceEndpoint
+   */
   addService(service: ServiceEndpoint): Promise<any> {
     return Promise.reject('Method addService not implemented')
   }