protected async getById(userId: string, appId: string): Promise<IUser> {
        this.orch.debugLog(`The App ${appId} is getting the userId: "${userId}"`);
        // #TODO: #AppsEngineTypes - Remove explicit types and typecasts once the apps-engine definition/implementation mismatch is fixed.
        const promise: Promise<IUser | undefined> = this.orch.getConverters()?.get('users').convertById(userId);
        return promise as Promise<IUser>;