public function destroy($id, Responder $responder, Verifier $verifier)
 {
     return $responder->respond(function ($response) use($id, $verifier) {
         $spotUser = SpotUser::find($id);
         if (!$verifier->deleteModel($spotUser)) {
             $response->setFails(['db' => 'There was a problem deleting user.']);
         }
     });
 }