public function displayAction()
    {
        $id = $this->params()->fromRoute('id', null);
        $filter = $this->params()->fromRoute('filter', null);
        if (!$id) {
            return $this->notFoundAction();
        }
        $user = $this->getUserMapper()->findById($id);
        if (!$user) {
            return $this->notFoundAction();
        }
        $image = $this->profileImageService->getUserImage($user, $filter);

        return new ImageModel($image);
    }