public function markImAsRead(\AlfredSlack\Models\ImModel $im)
 {
     $teamId = $im->getAuth()->team_id;
     $model = $this->services[$teamId];
     return $model->markImAsRead($im);
 }
 public function markImAsRead(\AlfredSlack\Models\ImModel $im)
 {
     $now = time();
     $this->commander->executeAsync('im.mark', ['channel' => $im->getId(), 'ts' => $now]);
 }